Issue #7989: Added pure python implementation of the datetime module.

1 files changed, 0 insertions, 5488 deletions

diff --git a/Modules/datetimemodule.c b/Modules/datetimemodule.c
deleted file mode 100644
index bd25d1e..0000000
--- a/Modules/datetimemodule.c
+++ /dev/null
@@ -1,5488 +0,0 @@
-/*  C implementation for the date/time type documented at
- *  http://www.zope.org/Members/fdrake/DateTimeWiki/FrontPage
- */
-
-#include "Python.h"
-#include "modsupport.h"
-#include "structmember.h"
-
-#include <time.h>
-
-#include "timefuncs.h"
-
-/* Differentiate between building the core module and building extension
- * modules.
- */
-#ifndef Py_BUILD_CORE
-#define Py_BUILD_CORE
-#endif
-#include "datetime.h"
-#undef Py_BUILD_CORE
-
-/* We require that C int be at least 32 bits, and use int virtually
- * everywhere.  In just a few cases we use a temp long, where a Python
- * API returns a C long.  In such cases, we have to ensure that the
- * final result fits in a C int (this can be an issue on 64-bit boxes).
- */
-#if SIZEOF_INT < 4
-#       error "datetime.c requires that C int have at least 32 bits"
-#endif
-
-#define MINYEAR 1
-#define MAXYEAR 9999
-#define MAXORDINAL 3652059 /* date(9999,12,31).toordinal() */
-
-/* Nine decimal digits is easy to communicate, and leaves enough room
- * so that two delta days can be added w/o fear of overflowing a signed
- * 32-bit int, and with plenty of room left over to absorb any possible
- * carries from adding seconds.
- */
-#define MAX_DELTA_DAYS 999999999
-
-/* Rename the long macros in datetime.h to more reasonable short names. */
-#define GET_YEAR                PyDateTime_GET_YEAR
-#define GET_MONTH               PyDateTime_GET_MONTH
-#define GET_DAY                 PyDateTime_GET_DAY
-#define DATE_GET_HOUR           PyDateTime_DATE_GET_HOUR
-#define DATE_GET_MINUTE         PyDateTime_DATE_GET_MINUTE
-#define DATE_GET_SECOND         PyDateTime_DATE_GET_SECOND
-#define DATE_GET_MICROSECOND    PyDateTime_DATE_GET_MICROSECOND
-
-/* Date accessors for date and datetime. */
-#define SET_YEAR(o, v)          (((o)->data[0] = ((v) & 0xff00) >> 8), \
-                 ((o)->data[1] = ((v) & 0x00ff)))
-#define SET_MONTH(o, v)         (PyDateTime_GET_MONTH(o) = (v))
-#define SET_DAY(o, v)           (PyDateTime_GET_DAY(o) = (v))
-
-/* Date/Time accessors for datetime. */
-#define DATE_SET_HOUR(o, v)     (PyDateTime_DATE_GET_HOUR(o) = (v))
-#define DATE_SET_MINUTE(o, v)   (PyDateTime_DATE_GET_MINUTE(o) = (v))
-#define DATE_SET_SECOND(o, v)   (PyDateTime_DATE_GET_SECOND(o) = (v))
-#define DATE_SET_MICROSECOND(o, v)      \
-    (((o)->data[7] = ((v) & 0xff0000) >> 16), \
-     ((o)->data[8] = ((v) & 0x00ff00) >> 8), \
-     ((o)->data[9] = ((v) & 0x0000ff)))
-
-/* Time accessors for time. */
-#define TIME_GET_HOUR           PyDateTime_TIME_GET_HOUR
-#define TIME_GET_MINUTE         PyDateTime_TIME_GET_MINUTE
-#define TIME_GET_SECOND         PyDateTime_TIME_GET_SECOND
-#define TIME_GET_MICROSECOND    PyDateTime_TIME_GET_MICROSECOND
-#define TIME_SET_HOUR(o, v)     (PyDateTime_TIME_GET_HOUR(o) = (v))
-#define TIME_SET_MINUTE(o, v)   (PyDateTime_TIME_GET_MINUTE(o) = (v))
-#define TIME_SET_SECOND(o, v)   (PyDateTime_TIME_GET_SECOND(o) = (v))
-#define TIME_SET_MICROSECOND(o, v)      \
-    (((o)->data[3] = ((v) & 0xff0000) >> 16), \
-     ((o)->data[4] = ((v) & 0x00ff00) >> 8), \
-     ((o)->data[5] = ((v) & 0x0000ff)))
-
-/* Delta accessors for timedelta. */
-#define GET_TD_DAYS(o)          (((PyDateTime_Delta *)(o))->days)
-#define GET_TD_SECONDS(o)       (((PyDateTime_Delta *)(o))->seconds)
-#define GET_TD_MICROSECONDS(o)  (((PyDateTime_Delta *)(o))->microseconds)
-
-#define SET_TD_DAYS(o, v)       ((o)->days = (v))
-#define SET_TD_SECONDS(o, v)    ((o)->seconds = (v))
-#define SET_TD_MICROSECONDS(o, v) ((o)->microseconds = (v))
-
-/* p is a pointer to a time or a datetime object; HASTZINFO(p) returns
- * p->hastzinfo.
- */
-#define HASTZINFO(p) (((_PyDateTime_BaseTZInfo *)(p))->hastzinfo)
-#define GET_TIME_TZINFO(p) (HASTZINFO(p) ? \
-                            ((PyDateTime_Time *)(p))->tzinfo : Py_None)
-#define GET_DT_TZINFO(p) (HASTZINFO(p) ? \
-                          ((PyDateTime_DateTime *)(p))->tzinfo : Py_None)
-/* M is a char or int claiming to be a valid month.  The macro is equivalent
- * to the two-sided Python test
- *      1 <= M <= 12
- */
-#define MONTH_IS_SANE(M) ((unsigned int)(M) - 1 < 12)
-
-/* Forward declarations. */
-static PyTypeObject PyDateTime_DateType;
-static PyTypeObject PyDateTime_DateTimeType;
-static PyTypeObject PyDateTime_DeltaType;
-static PyTypeObject PyDateTime_TimeType;
-static PyTypeObject PyDateTime_TZInfoType;
-static PyTypeObject PyDateTime_TimeZoneType;
-
-/* ---------------------------------------------------------------------------
- * Math utilities.
- */
-
-/* k = i+j overflows iff k differs in sign from both inputs,
- * iff k^i has sign bit set and k^j has sign bit set,
- * iff (k^i)&(k^j) has sign bit set.
- */
-#define SIGNED_ADD_OVERFLOWED(RESULT, I, J) \
-    ((((RESULT) ^ (I)) & ((RESULT) ^ (J))) < 0)
-
-/* Compute Python divmod(x, y), returning the quotient and storing the
- * remainder into *r.  The quotient is the floor of x/y, and that's
- * the real point of this.  C will probably truncate instead (C99
- * requires truncation; C89 left it implementation-defined).
- * Simplification:  we *require* that y > 0 here.  That's appropriate
- * for all the uses made of it.  This simplifies the code and makes
- * the overflow case impossible (divmod(LONG_MIN, -1) is the only
- * overflow case).
- */
-static int
-divmod(int x, int y, int *r)
-{
-    int quo;
-
-    assert(y > 0);
-    quo = x / y;
-    *r = x - quo * y;
-    if (*r < 0) {
-        --quo;
-        *r += y;
-    }
-    assert(0 <= *r && *r < y);
-    return quo;
-}
-
-/* Round a double to the nearest long.  |x| must be small enough to fit
- * in a C long; this is not checked.
- */
-static long
-round_to_long(double x)
-{
-    if (x >= 0.0)
-        x = floor(x + 0.5);
-    else
-        x = ceil(x - 0.5);
-    return (long)x;
-}
-
-/* Nearest integer to m / n for integers m and n. Half-integer results
- * are rounded to even.
- */
-static PyObject *
-divide_nearest(PyObject *m, PyObject *n)
-{
-    PyObject *result;
-    PyObject *temp;
-
-    temp = _PyLong_DivmodNear(m, n);
-    if (temp == NULL)
-        return NULL;
-    result = PyTuple_GET_ITEM(temp, 0);
-    Py_INCREF(result);
-    Py_DECREF(temp);
-
-    return result;
-}
-
-/* ---------------------------------------------------------------------------
- * General calendrical helper functions
- */
-
-/* For each month ordinal in 1..12, the number of days in that month,
- * and the number of days before that month in the same year.  These
- * are correct for non-leap years only.
- */
-static int _days_in_month[] = {
-    0, /* unused; this vector uses 1-based indexing */
-    31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-static int _days_before_month[] = {
-    0, /* unused; this vector uses 1-based indexing */
-    0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
-};
-
-/* year -> 1 if leap year, else 0. */
-static int
-is_leap(int year)
-{
-    /* Cast year to unsigned.  The result is the same either way, but
-     * C can generate faster code for unsigned mod than for signed
-     * mod (especially for % 4 -- a good compiler should just grab
-     * the last 2 bits when the LHS is unsigned).
-     */
-    const unsigned int ayear = (unsigned int)year;
-    return ayear % 4 == 0 && (ayear % 100 != 0 || ayear % 400 == 0);
-}
-
-/* year, month -> number of days in that month in that year */
-static int
-days_in_month(int year, int month)
-{
-    assert(month >= 1);
-    assert(month <= 12);
-    if (month == 2 && is_leap(year))
-        return 29;
-    else
-        return _days_in_month[month];
-}
-
-/* year, month -> number of days in year preceeding first day of month */
-static int
-days_before_month(int year, int month)
-{
-    int days;
-
-    assert(month >= 1);
-    assert(month <= 12);
-    days = _days_before_month[month];
-    if (month > 2 && is_leap(year))
-        ++days;
-    return days;
-}
-
-/* year -> number of days before January 1st of year.  Remember that we
- * start with year 1, so days_before_year(1) == 0.
- */
-static int
-days_before_year(int year)
-{
-    int y = year - 1;
-    /* This is incorrect if year <= 0; we really want the floor
-     * here.  But so long as MINYEAR is 1, the smallest year this
-     * can see is 0 (this can happen in some normalization endcases),
-     * so we'll just special-case that.
-     */
-    assert (year >= 0);
-    if (y >= 0)
-        return y*365 + y/4 - y/100 + y/400;
-    else {
-        assert(y == -1);
-        return -366;
-    }
-}
-
-/* Number of days in 4, 100, and 400 year cycles.  That these have
- * the correct values is asserted in the module init function.
- */
-#define DI4Y    1461    /* days_before_year(5); days in 4 years */
-#define DI100Y  36524   /* days_before_year(101); days in 100 years */
-#define DI400Y  146097  /* days_before_year(401); days in 400 years  */
-
-/* ordinal -> year, month, day, considering 01-Jan-0001 as day 1. */
-static void
-ord_to_ymd(int ordinal, int *year, int *month, int *day)
-{
-    int n, n1, n4, n100, n400, leapyear, preceding;
-
-    /* ordinal is a 1-based index, starting at 1-Jan-1.  The pattern of
-     * leap years repeats exactly every 400 years.  The basic strategy is
-     * to find the closest 400-year boundary at or before ordinal, then
-     * work with the offset from that boundary to ordinal.  Life is much
-     * clearer if we subtract 1 from ordinal first -- then the values
-     * of ordinal at 400-year boundaries are exactly those divisible
-     * by DI400Y:
-     *
-     *    D  M   Y            n              n-1
-     *    -- --- ----        ----------     ----------------
-     *    31 Dec -400        -DI400Y       -DI400Y -1
-     *     1 Jan -399         -DI400Y +1   -DI400Y      400-year boundary
-     *    ...
-     *    30 Dec  000        -1             -2
-     *    31 Dec  000         0             -1
-     *     1 Jan  001         1              0          400-year boundary
-     *     2 Jan  001         2              1
-     *     3 Jan  001         3              2
-     *    ...
-     *    31 Dec  400         DI400Y        DI400Y -1
-     *     1 Jan  401         DI400Y +1     DI400Y      400-year boundary
-     */
-    assert(ordinal >= 1);
-    --ordinal;
-    n400 = ordinal / DI400Y;
-    n = ordinal % DI400Y;
-    *year = n400 * 400 + 1;
-
-    /* Now n is the (non-negative) offset, in days, from January 1 of
-     * year, to the desired date.  Now compute how many 100-year cycles
-     * precede n.
-     * Note that it's possible for n100 to equal 4!  In that case 4 full
-     * 100-year cycles precede the desired day, which implies the
-     * desired day is December 31 at the end of a 400-year cycle.
-     */
-    n100 = n / DI100Y;
-    n = n % DI100Y;
-
-    /* Now compute how many 4-year cycles precede it. */
-    n4 = n / DI4Y;
-    n = n % DI4Y;
-
-    /* And now how many single years.  Again n1 can be 4, and again
-     * meaning that the desired day is December 31 at the end of the
-     * 4-year cycle.
-     */
-    n1 = n / 365;
-    n = n % 365;
-
-    *year += n100 * 100 + n4 * 4 + n1;
-    if (n1 == 4 || n100 == 4) {
-        assert(n == 0);
-        *year -= 1;
-        *month = 12;
-        *day = 31;
-        return;
-    }
-
-    /* Now the year is correct, and n is the offset from January 1.  We
-     * find the month via an estimate that's either exact or one too
-     * large.
-     */
-    leapyear = n1 == 3 && (n4 != 24 || n100 == 3);
-    assert(leapyear == is_leap(*year));
-    *month = (n + 50) >> 5;
-    preceding = (_days_before_month[*month] + (*month > 2 && leapyear));
-    if (preceding > n) {
-        /* estimate is too large */
-        *month -= 1;
-        preceding -= days_in_month(*year, *month);
-    }
-    n -= preceding;
-    assert(0 <= n);
-    assert(n < days_in_month(*year, *month));
-
-    *day = n + 1;
-}
-
-/* year, month, day -> ordinal, considering 01-Jan-0001 as day 1. */
-static int
-ymd_to_ord(int year, int month, int day)
-{
-    return days_before_year(year) + days_before_month(year, month) + day;
-}
-
-/* Day of week, where Monday==0, ..., Sunday==6.  1/1/1 was a Monday. */
-static int
-weekday(int year, int month, int day)
-{
-    return (ymd_to_ord(year, month, day) + 6) % 7;
-}
-
-/* Ordinal of the Monday starting week 1 of the ISO year.  Week 1 is the
- * first calendar week containing a Thursday.
- */
-static int
-iso_week1_monday(int year)
-{
-    int first_day = ymd_to_ord(year, 1, 1);     /* ord of 1/1 */
-    /* 0 if 1/1 is a Monday, 1 if a Tue, etc. */
-    int first_weekday = (first_day + 6) % 7;
-    /* ordinal of closest Monday at or before 1/1 */
-    int week1_monday  = first_day - first_weekday;
-
-    if (first_weekday > 3)      /* if 1/1 was Fri, Sat, Sun */
-        week1_monday += 7;
-    return week1_monday;
-}
-
-/* ---------------------------------------------------------------------------
- * Range checkers.
- */
-
-/* Check that -MAX_DELTA_DAYS <= days <= MAX_DELTA_DAYS.  If so, return 0.
- * If not, raise OverflowError and return -1.
- */
-static int
-check_delta_day_range(int days)
-{
-    if (-MAX_DELTA_DAYS <= days && days <= MAX_DELTA_DAYS)
-        return 0;
-    PyErr_Format(PyExc_OverflowError,
-                 "days=%d; must have magnitude <= %d",
-                 days, MAX_DELTA_DAYS);
-    return -1;
-}
-
-/* Check that date arguments are in range.  Return 0 if they are.  If they
- * aren't, raise ValueError and return -1.
- */
-static int
-check_date_args(int year, int month, int day)
-{
-
-    if (year < MINYEAR || year > MAXYEAR) {
-        PyErr_SetString(PyExc_ValueError,
-                        "year is out of range");
-        return -1;
-    }
-    if (month < 1 || month > 12) {
-        PyErr_SetString(PyExc_ValueError,
-                        "month must be in 1..12");
-        return -1;
-    }
-    if (day < 1 || day > days_in_month(year, month)) {
-        PyErr_SetString(PyExc_ValueError,
-                        "day is out of range for month");
-        return -1;
-    }
-    return 0;
-}
-
-/* Check that time arguments are in range.  Return 0 if they are.  If they
- * aren't, raise ValueError and return -1.
- */
-static int
-check_time_args(int h, int m, int s, int us)
-{
-    if (h < 0 || h > 23) {
-        PyErr_SetString(PyExc_ValueError,
-                        "hour must be in 0..23");
-        return -1;
-    }
-    if (m < 0 || m > 59) {
-        PyErr_SetString(PyExc_ValueError,
-                        "minute must be in 0..59");
-        return -1;
-    }
-    if (s < 0 || s > 59) {
-        PyErr_SetString(PyExc_ValueError,
-                        "second must be in 0..59");
-        return -1;
-    }
-    if (us < 0 || us > 999999) {
-        PyErr_SetString(PyExc_ValueError,
-                        "microsecond must be in 0..999999");
-        return -1;
-    }
-    return 0;
-}
-
-/* ---------------------------------------------------------------------------
- * Normalization utilities.
- */
-
-/* One step of a mixed-radix conversion.  A "hi" unit is equivalent to
- * factor "lo" units.  factor must be > 0.  If *lo is less than 0, or
- * at least factor, enough of *lo is converted into "hi" units so that
- * 0 <= *lo < factor.  The input values must be such that int overflow
- * is impossible.
- */
-static void
-normalize_pair(int *hi, int *lo, int factor)
-{
-    assert(factor > 0);
-    assert(lo != hi);
-    if (*lo < 0 || *lo >= factor) {
-        const int num_hi = divmod(*lo, factor, lo);
-        const int new_hi = *hi + num_hi;
-        assert(! SIGNED_ADD_OVERFLOWED(new_hi, *hi, num_hi));
-        *hi = new_hi;
-    }
-    assert(0 <= *lo && *lo < factor);
-}
-
-/* Fiddle days (d), seconds (s), and microseconds (us) so that
- *      0 <= *s < 24*3600
- *      0 <= *us < 1000000
- * The input values must be such that the internals don't overflow.
- * The way this routine is used, we don't get close.
- */
-static void
-normalize_d_s_us(int *d, int *s, int *us)
-{
-    if (*us < 0 || *us >= 1000000) {
-        normalize_pair(s, us, 1000000);
-        /* |s| can't be bigger than about
-         * |original s| + |original us|/1000000 now.
-         */
-
-    }
-    if (*s < 0 || *s >= 24*3600) {
-        normalize_pair(d, s, 24*3600);
-        /* |d| can't be bigger than about
-         * |original d| +
-         * (|original s| + |original us|/1000000) / (24*3600) now.
-         */
-    }
-    assert(0 <= *s && *s < 24*3600);
-    assert(0 <= *us && *us < 1000000);
-}
-
-/* Fiddle years (y), months (m), and days (d) so that
- *      1 <= *m <= 12
- *      1 <= *d <= days_in_month(*y, *m)
- * The input values must be such that the internals don't overflow.
- * The way this routine is used, we don't get close.
- */
-static int
-normalize_y_m_d(int *y, int *m, int *d)
-{
-    int dim;            /* # of days in month */
-
-    /* This gets muddy:  the proper range for day can't be determined
-     * without knowing the correct month and year, but if day is, e.g.,
-     * plus or minus a million, the current month and year values make
-     * no sense (and may also be out of bounds themselves).
-     * Saying 12 months == 1 year should be non-controversial.
-     */
-    if (*m < 1 || *m > 12) {
-        --*m;
-        normalize_pair(y, m, 12);
-        ++*m;
-        /* |y| can't be bigger than about
-         * |original y| + |original m|/12 now.
-         */
-    }
-    assert(1 <= *m && *m <= 12);
-
-    /* Now only day can be out of bounds (year may also be out of bounds
-     * for a datetime object, but we don't care about that here).
-     * If day is out of bounds, what to do is arguable, but at least the
-     * method here is principled and explainable.
-     */
-    dim = days_in_month(*y, *m);
-    if (*d < 1 || *d > dim) {
-        /* Move day-1 days from the first of the month.  First try to
-         * get off cheap if we're only one day out of range
-         * (adjustments for timezone alone can't be worse than that).
-         */
-        if (*d == 0) {
-            --*m;
-            if (*m > 0)
-                *d = days_in_month(*y, *m);
-            else {
-                --*y;
-                *m = 12;
-                *d = 31;
-            }
-        }
-        else if (*d == dim + 1) {
-            /* move forward a day */
-            ++*m;
-            *d = 1;
-            if (*m > 12) {
-                *m = 1;
-                ++*y;
-            }
-        }
-        else {
-            int ordinal = ymd_to_ord(*y, *m, 1) +
-                                      *d - 1;
-            if (ordinal < 1 || ordinal > MAXORDINAL) {
-                goto error;
-            } else {
-                ord_to_ymd(ordinal, y, m, d);
-                return 0;
-            }
-        }
-    }
-    assert(*m > 0);
-    assert(*d > 0);
-    if (MINYEAR <= *y && *y <= MAXYEAR)
-        return 0;
- error:
-    PyErr_SetString(PyExc_OverflowError,
-            "date value out of range");
-    return -1;
-
-}
-
-/* Fiddle out-of-bounds months and days so that the result makes some kind
- * of sense.  The parameters are both inputs and outputs.  Returns < 0 on
- * failure, where failure means the adjusted year is out of bounds.
- */
-static int
-normalize_date(int *year, int *month, int *day)
-{
-    return normalize_y_m_d(year, month, day);
-}
-
-/* Force all the datetime fields into range.  The parameters are both
- * inputs and outputs.  Returns < 0 on error.
- */
-static int
-normalize_datetime(int *year, int *month, int *day,
-                   int *hour, int *minute, int *second,
-                   int *microsecond)
-{
-    normalize_pair(second, microsecond, 1000000);
-    normalize_pair(minute, second, 60);
-    normalize_pair(hour, minute, 60);
-    normalize_pair(day, hour, 24);
-    return normalize_date(year, month, day);
-}
-
-/* ---------------------------------------------------------------------------
- * Basic object allocation:  tp_alloc implementations.  These allocate
- * Python objects of the right size and type, and do the Python object-
- * initialization bit.  If there's not enough memory, they return NULL after
- * setting MemoryError.  All data members remain uninitialized trash.
- *
- * We abuse the tp_alloc "nitems" argument to communicate whether a tzinfo
- * member is needed.  This is ugly, imprecise, and possibly insecure.
- * tp_basicsize for the time and datetime types is set to the size of the
- * struct that has room for the tzinfo member, so subclasses in Python will
- * allocate enough space for a tzinfo member whether or not one is actually
- * needed.  That's the "ugly and imprecise" parts.  The "possibly insecure"
- * part is that PyType_GenericAlloc() (which subclasses in Python end up
- * using) just happens today to effectively ignore the nitems argument
- * when tp_itemsize is 0, which it is for these type objects.  If that
- * changes, perhaps the callers of tp_alloc slots in this file should
- * be changed to force a 0 nitems argument unless the type being allocated
- * is a base type implemented in this file (so that tp_alloc is time_alloc
- * or datetime_alloc below, which know about the nitems abuse).
- */
-
-static PyObject *
-time_alloc(PyTypeObject *type, Py_ssize_t aware)
-{
-    PyObject *self;
-
-    self = (PyObject *)
-        PyObject_MALLOC(aware ?
-                        sizeof(PyDateTime_Time) :
-                sizeof(_PyDateTime_BaseTime));
-    if (self == NULL)
-        return (PyObject *)PyErr_NoMemory();
-    PyObject_INIT(self, type);
-    return self;
-}
-
-static PyObject *
-datetime_alloc(PyTypeObject *type, Py_ssize_t aware)
-{
-    PyObject *self;
-
-    self = (PyObject *)
-        PyObject_MALLOC(aware ?
-                        sizeof(PyDateTime_DateTime) :
-                sizeof(_PyDateTime_BaseDateTime));
-    if (self == NULL)
-        return (PyObject *)PyErr_NoMemory();
-    PyObject_INIT(self, type);
-    return self;
-}
-
-/* ---------------------------------------------------------------------------
- * Helpers for setting object fields.  These work on pointers to the
- * appropriate base class.
- */
-
-/* For date and datetime. */
-static void
-set_date_fields(PyDateTime_Date *self, int y, int m, int d)
-{
-    self->hashcode = -1;
-    SET_YEAR(self, y);
-    SET_MONTH(self, m);
-    SET_DAY(self, d);
-}
-
-/* ---------------------------------------------------------------------------
- * Create various objects, mostly without range checking.
- */
-
-/* Create a date instance with no range checking. */
-static PyObject *
-new_date_ex(int year, int month, int day, PyTypeObject *type)
-{
-    PyDateTime_Date *self;
-
-    self = (PyDateTime_Date *) (type->tp_alloc(type, 0));
-    if (self != NULL)
-        set_date_fields(self, year, month, day);
-    return (PyObject *) self;
-}
-
-#define new_date(year, month, day) \
-    new_date_ex(year, month, day, &PyDateTime_DateType)
-
-/* Create a datetime instance with no range checking. */
-static PyObject *
-new_datetime_ex(int year, int month, int day, int hour, int minute,
-             int second, int usecond, PyObject *tzinfo, PyTypeObject *type)
-{
-    PyDateTime_DateTime *self;
-    char aware = tzinfo != Py_None;
-
-    self = (PyDateTime_DateTime *) (type->tp_alloc(type, aware));
-    if (self != NULL) {
-        self->hastzinfo = aware;
-        set_date_fields((PyDateTime_Date *)self, year, month, day);
-        DATE_SET_HOUR(self, hour);
-        DATE_SET_MINUTE(self, minute);
-        DATE_SET_SECOND(self, second);
-        DATE_SET_MICROSECOND(self, usecond);
-        if (aware) {
-            Py_INCREF(tzinfo);
-            self->tzinfo = tzinfo;
-        }
-    }
-    return (PyObject *)self;
-}
-
-#define new_datetime(y, m, d, hh, mm, ss, us, tzinfo)           \
-    new_datetime_ex(y, m, d, hh, mm, ss, us, tzinfo,            \
-                    &PyDateTime_DateTimeType)
-
-/* Create a time instance with no range checking. */
-static PyObject *
-new_time_ex(int hour, int minute, int second, int usecond,
-            PyObject *tzinfo, PyTypeObject *type)
-{
-    PyDateTime_Time *self;
-    char aware = tzinfo != Py_None;
-
-    self = (PyDateTime_Time *) (type->tp_alloc(type, aware));
-    if (self != NULL) {
-        self->hastzinfo = aware;
-        self->hashcode = -1;
-        TIME_SET_HOUR(self, hour);
-        TIME_SET_MINUTE(self, minute);
-        TIME_SET_SECOND(self, second);
-        TIME_SET_MICROSECOND(self, usecond);
-        if (aware) {
-            Py_INCREF(tzinfo);
-            self->tzinfo = tzinfo;
-        }
-    }
-    return (PyObject *)self;
-}
-
-#define new_time(hh, mm, ss, us, tzinfo)                \
-    new_time_ex(hh, mm, ss, us, tzinfo, &PyDateTime_TimeType)
-
-/* Create a timedelta instance.  Normalize the members iff normalize is
- * true.  Passing false is a speed optimization, if you know for sure
- * that seconds and microseconds are already in their proper ranges.  In any
- * case, raises OverflowError and returns NULL if the normalized days is out
- * of range).
- */
-static PyObject *
-new_delta_ex(int days, int seconds, int microseconds, int normalize,
-             PyTypeObject *type)
-{
-    PyDateTime_Delta *self;
-
-    if (normalize)
-        normalize_d_s_us(&days, &seconds, &microseconds);
-    assert(0 <= seconds && seconds < 24*3600);
-    assert(0 <= microseconds && microseconds < 1000000);
-
-    if (check_delta_day_range(days) < 0)
-        return NULL;
-
-    self = (PyDateTime_Delta *) (type->tp_alloc(type, 0));
-    if (self != NULL) {
-        self->hashcode = -1;
-        SET_TD_DAYS(self, days);
-        SET_TD_SECONDS(self, seconds);
-        SET_TD_MICROSECONDS(self, microseconds);
-    }
-    return (PyObject *) self;
-}
-
-#define new_delta(d, s, us, normalize)  \
-    new_delta_ex(d, s, us, normalize, &PyDateTime_DeltaType)
-
-
-typedef struct
-{
-    PyObject_HEAD
-    PyObject *offset;
-    PyObject *name;
-} PyDateTime_TimeZone;
-
-PyObject *PyDateTime_TimeZone_UTC;
-
-/* Create new timezone instance checking offset range.  This
-   function does not check the name argument.  Caller must assure
-   that offset is a timedelta instance and name is either NULL
-   or a unicode object. */
-static PyObject *
-new_timezone(PyObject *offset, PyObject *name)
-{
-    PyDateTime_TimeZone *self;
-    PyTypeObject *type = &PyDateTime_TimeZoneType;
-
-    assert(offset != NULL);
-    assert(PyDelta_Check(offset));
-    assert(name == NULL || PyUnicode_Check(name));
-
-    if (GET_TD_MICROSECONDS(offset) != 0 || GET_TD_SECONDS(offset) % 60 != 0) {
-        PyErr_Format(PyExc_ValueError, "offset must be a timedelta"
-                     " representing a whole number of minutes");
-        return NULL;
-    }
-    if ((GET_TD_DAYS(offset) == -1 && GET_TD_SECONDS(offset) == 0) ||
-        GET_TD_DAYS(offset) < -1 || GET_TD_DAYS(offset) >= 1) {
-        PyErr_Format(PyExc_ValueError, "offset must be a timedelta"
-                     " strictly between -timedelta(hours=24) and"
-                     " timedelta(hours=24).");
-        return NULL;
-    }
-
-    self = (PyDateTime_TimeZone *)(type->tp_alloc(type, 0));
-    if (self == NULL) {
-        return NULL;
-    }
-    Py_INCREF(offset);
-    self->offset = offset;
-    Py_XINCREF(name);
-    self->name = name;
-    return (PyObject *)self;
-}
-
-/* ---------------------------------------------------------------------------
- * tzinfo helpers.
- */
-
-/* Ensure that p is None or of a tzinfo subclass.  Return 0 if OK; if not
- * raise TypeError and return -1.
- */
-static int
-check_tzinfo_subclass(PyObject *p)
-{
-    if (p == Py_None || PyTZInfo_Check(p))
-        return 0;
-    PyErr_Format(PyExc_TypeError,
-                 "tzinfo argument must be None or of a tzinfo subclass, "
-                 "not type '%s'",
-                 Py_TYPE(p)->tp_name);
-    return -1;
-}
-
-/* If self has a tzinfo member, return a BORROWED reference to it.  Else
- * return NULL, which is NOT AN ERROR.  There are no error returns here,
- * and the caller must not decref the result.
- */
-static PyObject *
-get_tzinfo_member(PyObject *self)
-{
-    PyObject *tzinfo = NULL;
-
-    if (PyDateTime_Check(self) && HASTZINFO(self))
-        tzinfo = ((PyDateTime_DateTime *)self)->tzinfo;
-    else if (PyTime_Check(self) && HASTZINFO(self))
-        tzinfo = ((PyDateTime_Time *)self)->tzinfo;
-
-    return tzinfo;
-}
-
-/* Call getattr(tzinfo, name)(tzinfoarg), and check the result.  tzinfo must
- * be an instance of the tzinfo class.  If the method returns None, this
- * returns None.  If the method doesn't return None or timedelta, TypeError is
- * raised and this returns NULL.  If it returns a timedelta and the value is
- * out of range or isn't a whole number of minutes, ValueError is raised and
- * this returns NULL.  Else result is returned.
- */
-static PyObject *
-call_tzinfo_method(PyObject *tzinfo, char *name, PyObject *tzinfoarg)
-{
-    PyObject *offset;
-
-    assert(tzinfo != NULL);
-    assert(PyTZInfo_Check(tzinfo) || tzinfo == Py_None);
-    assert(tzinfoarg != NULL);
-
-    if (tzinfo == Py_None)
-        Py_RETURN_NONE;
-    offset = PyObject_CallMethod(tzinfo, name, "O", tzinfoarg);
-    if (offset == Py_None || offset == NULL)
-        return offset;
-    if (PyDelta_Check(offset)) {
-        if (GET_TD_MICROSECONDS(offset) != 0 || GET_TD_SECONDS(offset) % 60 != 0) {
-            Py_DECREF(offset);
-            PyErr_Format(PyExc_ValueError, "offset must be a timedelta"
-                         " representing a whole number of minutes");
-            return NULL;
-        }
-        if ((GET_TD_DAYS(offset) == -1 && GET_TD_SECONDS(offset) == 0) ||
-            GET_TD_DAYS(offset) < -1 || GET_TD_DAYS(offset) >= 1) {
-            Py_DECREF(offset);
-            PyErr_Format(PyExc_ValueError, "offset must be a timedelta"
-                         " strictly between -timedelta(hours=24) and"
-                         " timedelta(hours=24).");
-            return NULL;
-        }
-    }
-    else {
-        Py_DECREF(offset);
-        PyErr_Format(PyExc_TypeError,
-                     "tzinfo.%s() must return None or "
-                     "timedelta, not '%.200s'",
-                     name, Py_TYPE(offset)->tp_name);
-        return NULL;
-    }
-
-    return offset;
-}
-
-/* Call tzinfo.utcoffset(tzinfoarg), and extract an integer from the
- * result.  tzinfo must be an instance of the tzinfo class.  If utcoffset()
- * returns None, call_utcoffset returns 0 and sets *none to 1.  If uctoffset()
- * doesn't return None or timedelta, TypeError is raised and this returns -1.
- * If utcoffset() returns an invalid timedelta (out of range, or not a whole
- * # of minutes), ValueError is raised and this returns -1.  Else *none is
- * set to 0 and the offset is returned (as int # of minutes east of UTC).
- */
-static PyObject *
-call_utcoffset(PyObject *tzinfo, PyObject *tzinfoarg)
-{
-    return call_tzinfo_method(tzinfo, "utcoffset", tzinfoarg);
-}
-
-/* Call tzinfo.dst(tzinfoarg), and extract an integer from the
- * result.  tzinfo must be an instance of the tzinfo class.  If dst()
- * returns None, call_dst returns 0 and sets *none to 1.  If dst()
- & doesn't return None or timedelta, TypeError is raised and this
- * returns -1.  If dst() returns an invalid timedelta for a UTC offset,
- * ValueError is raised and this returns -1.  Else *none is set to 0 and
- * the offset is returned (as an int # of minutes east of UTC).
- */
-static PyObject *
-call_dst(PyObject *tzinfo, PyObject *tzinfoarg)
-{
-    return call_tzinfo_method(tzinfo, "dst", tzinfoarg);
-}
-
-/* Call tzinfo.tzname(tzinfoarg), and return the result.  tzinfo must be
- * an instance of the tzinfo class or None.  If tzinfo isn't None, and
- * tzname() doesn't return None or a string, TypeError is raised and this
- * returns NULL.  If the result is a string, we ensure it is a Unicode
- * string.
- */
-static PyObject *
-call_tzname(PyObject *tzinfo, PyObject *tzinfoarg)
-{
-    PyObject *result;
-
-    assert(tzinfo != NULL);
-    assert(check_tzinfo_subclass(tzinfo) >= 0);
-    assert(tzinfoarg != NULL);
-
-    if (tzinfo == Py_None)
-        Py_RETURN_NONE;
-
-    result = PyObject_CallMethod(tzinfo, "tzname", "O", tzinfoarg);
-
-    if (result == NULL || result == Py_None)
-        return result;
-
-    if (!PyUnicode_Check(result)) {
-        PyErr_Format(PyExc_TypeError, "tzinfo.tzname() must "
-                     "return None or a string, not '%s'",
-                     Py_TYPE(result)->tp_name);
-        Py_DECREF(result);
-        result = NULL;
-    }
-
-    return result;
-}
-
-/* repr is like "someclass(arg1, arg2)".  If tzinfo isn't None,
- * stuff
- *     ", tzinfo=" + repr(tzinfo)
- * before the closing ")".
- */
-static PyObject *
-append_keyword_tzinfo(PyObject *repr, PyObject *tzinfo)
-{
-    PyObject *temp;
-
-    assert(PyUnicode_Check(repr));
-    assert(tzinfo);
-    if (tzinfo == Py_None)
-        return repr;
-    /* Get rid of the trailing ')'. */
-    assert(PyUnicode_AS_UNICODE(repr)[PyUnicode_GET_SIZE(repr)-1] == ')');
-    temp = PyUnicode_FromUnicode(PyUnicode_AS_UNICODE(repr),
-                                      PyUnicode_GET_SIZE(repr) - 1);
-    Py_DECREF(repr);
-    if (temp == NULL)
-        return NULL;
-    repr = PyUnicode_FromFormat("%U, tzinfo=%R)", temp, tzinfo);
-    Py_DECREF(temp);
-    return repr;
-}
-
-/* ---------------------------------------------------------------------------
- * String format helpers.
- */
-
-static PyObject *
-format_ctime(PyDateTime_Date *date, int hours, int minutes, int seconds)
-{
-    static const char *DayNames[] = {
-        "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
-    };
-    static const char *MonthNames[] = {
-        "Jan", "Feb", "Mar", "Apr", "May", "Jun",
-        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-    };
-
-    int wday = weekday(GET_YEAR(date), GET_MONTH(date), GET_DAY(date));
-
-    return PyUnicode_FromFormat("%s %s %2d %02d:%02d:%02d %04d",
-                                DayNames[wday], MonthNames[GET_MONTH(date)-1],
-                                GET_DAY(date), hours, minutes, seconds,
-                                GET_YEAR(date));
-}
-
-static PyObject *delta_negative(PyDateTime_Delta *self);
-
-/* Add an hours & minutes UTC offset string to buf.  buf has no more than
- * buflen bytes remaining.  The UTC offset is gotten by calling
- * tzinfo.uctoffset(tzinfoarg).  If that returns None, \0 is stored into
- * *buf, and that's all.  Else the returned value is checked for sanity (an
- * integer in range), and if that's OK it's converted to an hours & minutes
- * string of the form
- *   sign HH sep MM
- * Returns 0 if everything is OK.  If the return value from utcoffset() is
- * bogus, an appropriate exception is set and -1 is returned.
- */
-static int
-format_utcoffset(char *buf, size_t buflen, const char *sep,
-                PyObject *tzinfo, PyObject *tzinfoarg)
-{
-    PyObject *offset;
-    int hours, minutes, seconds;
-    char sign;
-
-    assert(buflen >= 1);
-
-    offset = call_utcoffset(tzinfo, tzinfoarg);
-    if (offset == NULL)
-        return -1;
-    if (offset == Py_None) {
-        Py_DECREF(offset);
-        *buf = '\0';
-        return 0;
-    }
-    /* Offset is normalized, so it is negative if days < 0 */
-    if (GET_TD_DAYS(offset) < 0) {
-        PyObject *temp = offset;
-        sign = '-';
-        offset = delta_negative((PyDateTime_Delta *)offset);
-        Py_DECREF(temp);
-        if (offset == NULL)
-            return -1;
-    }
-    else {
-        sign = '+';
-    }
-    /* Offset is not negative here. */
-    seconds = GET_TD_SECONDS(offset);
-    Py_DECREF(offset);
-    minutes = divmod(seconds, 60, &seconds);
-    hours = divmod(minutes, 60, &minutes);
-    assert(seconds == 0);
-    /* XXX ignore sub-minute data, curently not allowed. */
-    PyOS_snprintf(buf, buflen, "%c%02d%s%02d", sign, hours, sep, minutes);
-
-    return 0;
-}
-
-static PyObject *
-make_Zreplacement(PyObject *object, PyObject *tzinfoarg)
-{
-    PyObject *temp;
-    PyObject *tzinfo = get_tzinfo_member(object);
-    PyObject *Zreplacement = PyUnicode_FromStringAndSize(NULL, 0);
-    if (Zreplacement == NULL)
-        return NULL;
-    if (tzinfo == Py_None || tzinfo == NULL)
-        return Zreplacement;
-
-    assert(tzinfoarg != NULL);
-    temp = call_tzname(tzinfo, tzinfoarg);
-    if (temp == NULL)
-        goto Error;
-    if (temp == Py_None) {
-        Py_DECREF(temp);
-        return Zreplacement;
-    }
-
-    assert(PyUnicode_Check(temp));
-    /* Since the tzname is getting stuffed into the
-     * format, we have to double any % signs so that
-     * strftime doesn't treat them as format codes.
-     */
-    Py_DECREF(Zreplacement);
-    Zreplacement = PyObject_CallMethod(temp, "replace", "ss", "%", "%%");
-    Py_DECREF(temp);
-    if (Zreplacement == NULL)
-        return NULL;
-    if (!PyUnicode_Check(Zreplacement)) {
-        PyErr_SetString(PyExc_TypeError,
-                        "tzname.replace() did not return a string");
-        goto Error;
-    }
-    return Zreplacement;
-
-  Error:
-    Py_DECREF(Zreplacement);
-    return NULL;
-}
-
-static PyObject *
-make_freplacement(PyObject *object)
-{
-    char freplacement[64];
-    if (PyTime_Check(object))
-        sprintf(freplacement, "%06d", TIME_GET_MICROSECOND(object));
-    else if (PyDateTime_Check(object))
-        sprintf(freplacement, "%06d", DATE_GET_MICROSECOND(object));
-    else
-        sprintf(freplacement, "%06d", 0);
-
-    return PyBytes_FromStringAndSize(freplacement, strlen(freplacement));
-}
-
-/* I sure don't want to reproduce the strftime code from the time module,
- * so this imports the module and calls it.  All the hair is due to
- * giving special meanings to the %z, %Z and %f format codes via a
- * preprocessing step on the format string.
- * tzinfoarg is the argument to pass to the object's tzinfo method, if
- * needed.
- */
-static PyObject *
-wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
-              PyObject *tzinfoarg)
-{
-    PyObject *result = NULL;            /* guilty until proved innocent */
-
-    PyObject *zreplacement = NULL;      /* py string, replacement for %z */
-    PyObject *Zreplacement = NULL;      /* py string, replacement for %Z */
-    PyObject *freplacement = NULL;      /* py string, replacement for %f */
-
-    const char *pin;            /* pointer to next char in input format */
-    Py_ssize_t flen;            /* length of input format */
-    char ch;                    /* next char in input format */
-
-    PyObject *newfmt = NULL;            /* py string, the output format */
-    char *pnew;         /* pointer to available byte in output format */
-    size_t totalnew;            /* number bytes total in output format buffer,
-                               exclusive of trailing \0 */
-    size_t usednew;     /* number bytes used so far in output format buffer */
-
-    const char *ptoappend;      /* ptr to string to append to output buffer */
-    Py_ssize_t ntoappend;       /* # of bytes to append to output buffer */
-
-    assert(object && format && timetuple);
-    assert(PyUnicode_Check(format));
-    /* Convert the input format to a C string and size */
-    pin = _PyUnicode_AsStringAndSize(format, &flen);
-    if (!pin)
-        return NULL;
-
-    /* Give up if the year is before 1900.
-     * Python strftime() plays games with the year, and different
-     * games depending on whether envar PYTHON2K is set.  This makes
-     * years before 1900 a nightmare, even if the platform strftime
-     * supports them (and not all do).
-     * We could get a lot farther here by avoiding Python's strftime
-     * wrapper and calling the C strftime() directly, but that isn't
-     * an option in the Python implementation of this module.
-     */
-    {
-        long year;
-        PyObject *pyyear = PySequence_GetItem(timetuple, 0);
-        if (pyyear == NULL) return NULL;
-        assert(PyLong_Check(pyyear));
-        year = PyLong_AsLong(pyyear);
-        Py_DECREF(pyyear);
-        if (year < 1900) {
-            PyErr_Format(PyExc_ValueError, "year=%ld is before "
-                         "1900; the datetime strftime() "
-                         "methods require year >= 1900",
-                         year);
-            return NULL;
-        }
-    }
-
-    /* Scan the input format, looking for %z/%Z/%f escapes, building
-     * a new format.  Since computing the replacements for those codes
-     * is expensive, don't unless they're actually used.
-     */
-    if (flen > INT_MAX - 1) {
-        PyErr_NoMemory();
-        goto Done;
-    }
-
-    totalnew = flen + 1;        /* realistic if no %z/%Z */
-    newfmt = PyBytes_FromStringAndSize(NULL, totalnew);
-    if (newfmt == NULL) goto Done;
-    pnew = PyBytes_AsString(newfmt);
-    usednew = 0;
-
-    while ((ch = *pin++) != '\0') {
-        if (ch != '%') {
-            ptoappend = pin - 1;
-            ntoappend = 1;
-        }
-        else if ((ch = *pin++) == '\0') {
-            /* There's a lone trailing %; doesn't make sense. */
-            PyErr_SetString(PyExc_ValueError, "strftime format "
-                            "ends with raw %");
-            goto Done;
-        }
-        /* A % has been seen and ch is the character after it. */
-        else if (ch == 'z') {
-            if (zreplacement == NULL) {
-                /* format utcoffset */
-                char buf[100];
-                PyObject *tzinfo = get_tzinfo_member(object);
-                zreplacement = PyBytes_FromStringAndSize("", 0);
-                if (zreplacement == NULL) goto Done;
-                if (tzinfo != Py_None && tzinfo != NULL) {
-                    assert(tzinfoarg != NULL);
-                    if (format_utcoffset(buf,
-                                         sizeof(buf),
-                                         "",
-                                         tzinfo,
-                                         tzinfoarg) < 0)
-                        goto Done;
-                    Py_DECREF(zreplacement);
-                    zreplacement =
-                      PyBytes_FromStringAndSize(buf,
-                                               strlen(buf));
-                    if (zreplacement == NULL)
-                        goto Done;
-                }
-            }
-            assert(zreplacement != NULL);
-            ptoappend = PyBytes_AS_STRING(zreplacement);
-            ntoappend = PyBytes_GET_SIZE(zreplacement);
-        }
-        else if (ch == 'Z') {
-            /* format tzname */
-            if (Zreplacement == NULL) {
-                Zreplacement = make_Zreplacement(object,
-                                                 tzinfoarg);
-                if (Zreplacement == NULL)
-                    goto Done;
-            }
-            assert(Zreplacement != NULL);
-            assert(PyUnicode_Check(Zreplacement));
-            ptoappend = _PyUnicode_AsStringAndSize(Zreplacement,
-                                                  &ntoappend);
-            ntoappend = Py_SIZE(Zreplacement);
-        }
-        else if (ch == 'f') {
-            /* format microseconds */
-            if (freplacement == NULL) {
-                freplacement = make_freplacement(object);
-                if (freplacement == NULL)
-                    goto Done;
-            }
-            assert(freplacement != NULL);
-            assert(PyBytes_Check(freplacement));
-            ptoappend = PyBytes_AS_STRING(freplacement);
-            ntoappend = PyBytes_GET_SIZE(freplacement);
-        }
-        else {
-            /* percent followed by neither z nor Z */
-            ptoappend = pin - 2;
-            ntoappend = 2;
-        }
-
-        /* Append the ntoappend chars starting at ptoappend to
-         * the new format.
-         */
-        if (ntoappend == 0)
-            continue;
-        assert(ptoappend != NULL);
-        assert(ntoappend > 0);
-        while (usednew + ntoappend > totalnew) {
-            size_t bigger = totalnew << 1;
-            if ((bigger >> 1) != totalnew) { /* overflow */
-                PyErr_NoMemory();
-                goto Done;
-            }
-            if (_PyBytes_Resize(&newfmt, bigger) < 0)
-                goto Done;
-            totalnew = bigger;
-            pnew = PyBytes_AsString(newfmt) + usednew;
-        }
-        memcpy(pnew, ptoappend, ntoappend);
-        pnew += ntoappend;
-        usednew += ntoappend;
-        assert(usednew <= totalnew);
-    }  /* end while() */
-
-    if (_PyBytes_Resize(&newfmt, usednew) < 0)
-        goto Done;
-    {
-        PyObject *format;
-        PyObject *time = PyImport_ImportModuleNoBlock("time");
-        if (time == NULL)
-            goto Done;
-        format = PyUnicode_FromString(PyBytes_AS_STRING(newfmt));
-        if (format != NULL) {
-            result = PyObject_CallMethod(time, "strftime", "OO",
-                                         format, timetuple, NULL);
-            Py_DECREF(format);
-        }
-        Py_DECREF(time);
-    }
- Done:
-    Py_XDECREF(freplacement);
-    Py_XDECREF(zreplacement);
-    Py_XDECREF(Zreplacement);
-    Py_XDECREF(newfmt);
-    return result;
-}
-
-/* ---------------------------------------------------------------------------
- * Wrap functions from the time module.  These aren't directly available
- * from C.  Perhaps they should be.
- */
-
-/* Call time.time() and return its result (a Python float). */
-static PyObject *
-time_time(void)
-{
-    PyObject *result = NULL;
-    PyObject *time = PyImport_ImportModuleNoBlock("time");
-
-    if (time != NULL) {
-        result = PyObject_CallMethod(time, "time", "()");
-        Py_DECREF(time);
-    }
-    return result;
-}
-
-/* Build a time.struct_time.  The weekday and day number are automatically
- * computed from the y,m,d args.
- */
-static PyObject *
-build_struct_time(int y, int m, int d, int hh, int mm, int ss, int dstflag)
-{
-    PyObject *time;
-    PyObject *result = NULL;
-
-    time = PyImport_ImportModuleNoBlock("time");
-    if (time != NULL) {
-        result = PyObject_CallMethod(time, "struct_time",
-                                     "((iiiiiiiii))",
-                                     y, m, d,
-                                     hh, mm, ss,
-                                     weekday(y, m, d),
-                                     days_before_month(y, m) + d,
-                                     dstflag);
-        Py_DECREF(time);
-    }
-    return result;
-}
-
-/* ---------------------------------------------------------------------------
- * Miscellaneous helpers.
- */
-
-/* For various reasons, we need to use tp_richcompare instead of tp_reserved.
- * The comparisons here all most naturally compute a cmp()-like result.
- * This little helper turns that into a bool result for rich comparisons.
- */
-static PyObject *
-diff_to_bool(int diff, int op)
-{
-    PyObject *result;
-    int istrue;
-
-    switch (op) {
-        case Py_EQ: istrue = diff == 0; break;
-        case Py_NE: istrue = diff != 0; break;
-        case Py_LE: istrue = diff <= 0; break;
-        case Py_GE: istrue = diff >= 0; break;
-        case Py_LT: istrue = diff < 0; break;
-        case Py_GT: istrue = diff > 0; break;
-        default:
-            assert(! "op unknown");
-            istrue = 0; /* To shut up compiler */
-    }
-    result = istrue ? Py_True : Py_False;
-    Py_INCREF(result);
-    return result;
-}
-
-/* Raises a "can't compare" TypeError and returns NULL. */
-static PyObject *
-cmperror(PyObject *a, PyObject *b)
-{
-    PyErr_Format(PyExc_TypeError,
-                 "can't compare %s to %s",
-                 Py_TYPE(a)->tp_name, Py_TYPE(b)->tp_name);
-    return NULL;
-}
-
-/* ---------------------------------------------------------------------------
- * Cached Python objects; these are set by the module init function.
- */
-
-/* Conversion factors. */
-static PyObject *us_per_us = NULL;      /* 1 */
-static PyObject *us_per_ms = NULL;      /* 1000 */
-static PyObject *us_per_second = NULL;  /* 1000000 */
-static PyObject *us_per_minute = NULL;  /* 1e6 * 60 as Python int */
-static PyObject *us_per_hour = NULL;    /* 1e6 * 3600 as Python long */
-static PyObject *us_per_day = NULL;     /* 1e6 * 3600 * 24 as Python long */
-static PyObject *us_per_week = NULL;    /* 1e6*3600*24*7 as Python long */
-static PyObject *seconds_per_day = NULL; /* 3600*24 as Python int */
-
-/* ---------------------------------------------------------------------------
- * Class implementations.
- */
-
-/*
- * PyDateTime_Delta implementation.
- */
-
-/* Convert a timedelta to a number of us,
- *      (24*3600*self.days + self.seconds)*1000000 + self.microseconds
- * as a Python int or long.
- * Doing mixed-radix arithmetic by hand instead is excruciating in C,
- * due to ubiquitous overflow possibilities.
- */
-static PyObject *
-delta_to_microseconds(PyDateTime_Delta *self)
-{
-    PyObject *x1 = NULL;
-    PyObject *x2 = NULL;
-    PyObject *x3 = NULL;
-    PyObject *result = NULL;
-
-    x1 = PyLong_FromLong(GET_TD_DAYS(self));
-    if (x1 == NULL)
-        goto Done;
-    x2 = PyNumber_Multiply(x1, seconds_per_day);        /* days in seconds */
-    if (x2 == NULL)
-        goto Done;
-    Py_DECREF(x1);
-    x1 = NULL;
-
-    /* x2 has days in seconds */
-    x1 = PyLong_FromLong(GET_TD_SECONDS(self));         /* seconds */
-    if (x1 == NULL)
-        goto Done;
-    x3 = PyNumber_Add(x1, x2);          /* days and seconds in seconds */
-    if (x3 == NULL)
-        goto Done;
-    Py_DECREF(x1);
-    Py_DECREF(x2);
-    x1 = x2 = NULL;
-
-    /* x3 has days+seconds in seconds */
-    x1 = PyNumber_Multiply(x3, us_per_second);          /* us */
-    if (x1 == NULL)
-        goto Done;
-    Py_DECREF(x3);
-    x3 = NULL;
-
-    /* x1 has days+seconds in us */
-    x2 = PyLong_FromLong(GET_TD_MICROSECONDS(self));
-    if (x2 == NULL)
-        goto Done;
-    result = PyNumber_Add(x1, x2);
-
-Done:
-    Py_XDECREF(x1);
-    Py_XDECREF(x2);
-    Py_XDECREF(x3);
-    return result;
-}
-
-/* Convert a number of us (as a Python int or long) to a timedelta.
- */
-static PyObject *
-microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
-{
-    int us;
-    int s;
-    int d;
-    long temp;
-
-    PyObject *tuple = NULL;
-    PyObject *num = NULL;
-    PyObject *result = NULL;
-
-    tuple = PyNumber_Divmod(pyus, us_per_second);
-    if (tuple == NULL)
-        goto Done;
-
-    num = PyTuple_GetItem(tuple, 1);            /* us */
-    if (num == NULL)
-        goto Done;
-    temp = PyLong_AsLong(num);
-    num = NULL;
-    if (temp == -1 && PyErr_Occurred())
-        goto Done;
-    assert(0 <= temp && temp < 1000000);
-    us = (int)temp;
-    if (us < 0) {
-        /* The divisor was positive, so this must be an error. */
-        assert(PyErr_Occurred());
-        goto Done;
-    }
-
-    num = PyTuple_GetItem(tuple, 0);            /* leftover seconds */
-    if (num == NULL)
-        goto Done;
-    Py_INCREF(num);
-    Py_DECREF(tuple);
-
-    tuple = PyNumber_Divmod(num, seconds_per_day);
-    if (tuple == NULL)
-        goto Done;
-    Py_DECREF(num);
-
-    num = PyTuple_GetItem(tuple, 1);            /* seconds */
-    if (num == NULL)
-        goto Done;
-    temp = PyLong_AsLong(num);
-    num = NULL;
-    if (temp == -1 && PyErr_Occurred())
-        goto Done;
-    assert(0 <= temp && temp < 24*3600);
-    s = (int)temp;
-
-    if (s < 0) {
-        /* The divisor was positive, so this must be an error. */
-        assert(PyErr_Occurred());
-        goto Done;
-    }
-
-    num = PyTuple_GetItem(tuple, 0);            /* leftover days */
-    if (num == NULL)
-        goto Done;
-    Py_INCREF(num);
-    temp = PyLong_AsLong(num);
-    if (temp == -1 && PyErr_Occurred())
-        goto Done;
-    d = (int)temp;
-    if ((long)d != temp) {
-        PyErr_SetString(PyExc_OverflowError, "normalized days too "
-                        "large to fit in a C int");
-        goto Done;
-    }
-    result = new_delta_ex(d, s, us, 0, type);
-
-Done:
-    Py_XDECREF(tuple);
-    Py_XDECREF(num);
-    return result;
-}
-
-#define microseconds_to_delta(pymicros) \
-    microseconds_to_delta_ex(pymicros, &PyDateTime_DeltaType)
-
-static PyObject *
-multiply_int_timedelta(PyObject *intobj, PyDateTime_Delta *delta)
-{
-    PyObject *pyus_in;
-    PyObject *pyus_out;
-    PyObject *result;
-
-    pyus_in = delta_to_microseconds(delta);
-    if (pyus_in == NULL)
-        return NULL;
-
-    pyus_out = PyNumber_Multiply(pyus_in, intobj);
-    Py_DECREF(pyus_in);
-    if (pyus_out == NULL)
-        return NULL;
-
-    result = microseconds_to_delta(pyus_out);
-    Py_DECREF(pyus_out);
-    return result;
-}
-
-static PyObject *
-multiply_float_timedelta(PyObject *floatobj, PyDateTime_Delta *delta)
-{
-    PyObject *result = NULL;
-    PyObject *pyus_in = NULL, *temp, *pyus_out;
-    PyObject *ratio = NULL;
-
-    pyus_in = delta_to_microseconds(delta);
-    if (pyus_in == NULL)
-        return NULL;
-    ratio = PyObject_CallMethod(floatobj, "as_integer_ratio", NULL);
-    if (ratio == NULL)
-        goto error;
-    temp = PyNumber_Multiply(pyus_in, PyTuple_GET_ITEM(ratio, 0));
-    Py_DECREF(pyus_in);
-    pyus_in = NULL;
-    if (temp == NULL)
-        goto error;
-    pyus_out = divide_nearest(temp, PyTuple_GET_ITEM(ratio, 1));
-    Py_DECREF(temp);
-    if (pyus_out == NULL)
-        goto error;
-    result = microseconds_to_delta(pyus_out);
-    Py_DECREF(pyus_out);
- error:
-    Py_XDECREF(pyus_in);
-    Py_XDECREF(ratio);
-
-    return result;
-}
-
-static PyObject *
-divide_timedelta_int(PyDateTime_Delta *delta, PyObject *intobj)
-{
-    PyObject *pyus_in;
-    PyObject *pyus_out;
-    PyObject *result;
-
-    pyus_in = delta_to_microseconds(delta);
-    if (pyus_in == NULL)
-        return NULL;
-
-    pyus_out = PyNumber_FloorDivide(pyus_in, intobj);
-    Py_DECREF(pyus_in);
-    if (pyus_out == NULL)
-        return NULL;
-
-    result = microseconds_to_delta(pyus_out);
-    Py_DECREF(pyus_out);
-    return result;
-}
-
-static PyObject *
-divide_timedelta_timedelta(PyDateTime_Delta *left, PyDateTime_Delta *right)
-{
-    PyObject *pyus_left;
-    PyObject *pyus_right;
-    PyObject *result;
-
-    pyus_left = delta_to_microseconds(left);
-    if (pyus_left == NULL)
-        return NULL;
-
-    pyus_right = delta_to_microseconds(right);
-    if (pyus_right == NULL)     {
-        Py_DECREF(pyus_left);
-        return NULL;
-    }
-
-    result = PyNumber_FloorDivide(pyus_left, pyus_right);
-    Py_DECREF(pyus_left);
-    Py_DECREF(pyus_right);
-    return result;
-}
-
-static PyObject *
-truedivide_timedelta_timedelta(PyDateTime_Delta *left, PyDateTime_Delta *right)
-{
-    PyObject *pyus_left;
-    PyObject *pyus_right;
-    PyObject *result;
-
-    pyus_left = delta_to_microseconds(left);
-    if (pyus_left == NULL)
-        return NULL;
-
-    pyus_right = delta_to_microseconds(right);
-    if (pyus_right == NULL)     {
-        Py_DECREF(pyus_left);
-        return NULL;
-    }
-
-    result = PyNumber_TrueDivide(pyus_left, pyus_right);
-    Py_DECREF(pyus_left);
-    Py_DECREF(pyus_right);
-    return result;
-}
-
-static PyObject *
-truedivide_timedelta_float(PyDateTime_Delta *delta, PyObject *f)
-{
-    PyObject *result = NULL;
-    PyObject *pyus_in = NULL, *temp, *pyus_out;
-    PyObject *ratio = NULL;
-
-    pyus_in = delta_to_microseconds(delta);
-    if (pyus_in == NULL)
-        return NULL;
-    ratio = PyObject_CallMethod(f, "as_integer_ratio", NULL);
-    if (ratio == NULL)
-        goto error;
-    temp = PyNumber_Multiply(pyus_in, PyTuple_GET_ITEM(ratio, 1));
-    Py_DECREF(pyus_in);
-    pyus_in = NULL;
-    if (temp == NULL)
-        goto error;
-    pyus_out = divide_nearest(temp, PyTuple_GET_ITEM(ratio, 0));
-    Py_DECREF(temp);
-    if (pyus_out == NULL)
-        goto error;
-    result = microseconds_to_delta(pyus_out);
-    Py_DECREF(pyus_out);
- error:
-    Py_XDECREF(pyus_in);
-    Py_XDECREF(ratio);
-
-    return result;
-}
-
-static PyObject *
-truedivide_timedelta_int(PyDateTime_Delta *delta, PyObject *i)
-{
-    PyObject *result;
-    PyObject *pyus_in, *pyus_out;
-    pyus_in = delta_to_microseconds(delta);
-    if (pyus_in == NULL)
-        return NULL;
-    pyus_out = divide_nearest(pyus_in, i);
-    Py_DECREF(pyus_in);
-    if (pyus_out == NULL)
-        return NULL;
-    result = microseconds_to_delta(pyus_out);
-    Py_DECREF(pyus_out);
-
-    return result;
-}
-
-static PyObject *
-delta_add(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDelta_Check(left) && PyDelta_Check(right)) {
-        /* delta + delta */
-        /* The C-level additions can't overflow because of the
-         * invariant bounds.
-         */
-        int days = GET_TD_DAYS(left) + GET_TD_DAYS(right);
-        int seconds = GET_TD_SECONDS(left) + GET_TD_SECONDS(right);
-        int microseconds = GET_TD_MICROSECONDS(left) +
-                           GET_TD_MICROSECONDS(right);
-        result = new_delta(days, seconds, microseconds, 1);
-    }
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-static PyObject *
-delta_negative(PyDateTime_Delta *self)
-{
-    return new_delta(-GET_TD_DAYS(self),
-                     -GET_TD_SECONDS(self),
-                     -GET_TD_MICROSECONDS(self),
-                     1);
-}
-
-static PyObject *
-delta_positive(PyDateTime_Delta *self)
-{
-    /* Could optimize this (by returning self) if this isn't a
-     * subclass -- but who uses unary + ?  Approximately nobody.
-     */
-    return new_delta(GET_TD_DAYS(self),
-                     GET_TD_SECONDS(self),
-                     GET_TD_MICROSECONDS(self),
-                     0);
-}
-
-static PyObject *
-delta_abs(PyDateTime_Delta *self)
-{
-    PyObject *result;
-
-    assert(GET_TD_MICROSECONDS(self) >= 0);
-    assert(GET_TD_SECONDS(self) >= 0);
-
-    if (GET_TD_DAYS(self) < 0)
-        result = delta_negative(self);
-    else
-        result = delta_positive(self);
-
-    return result;
-}
-
-static PyObject *
-delta_subtract(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDelta_Check(left) && PyDelta_Check(right)) {
-        /* delta - delta */
-        PyObject *minus_right = PyNumber_Negative(right);
-        if (minus_right) {
-            result = delta_add(left, minus_right);
-            Py_DECREF(minus_right);
-        }
-        else
-            result = NULL;
-    }
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-static int
-delta_cmp(PyObject *self, PyObject *other)
-{
-    int diff = GET_TD_DAYS(self) - GET_TD_DAYS(other);
-    if (diff == 0) {
-        diff = GET_TD_SECONDS(self) - GET_TD_SECONDS(other);
-        if (diff == 0)
-            diff = GET_TD_MICROSECONDS(self) -
-                GET_TD_MICROSECONDS(other);
-    }
-    return diff;
-}
-
-static PyObject *
-delta_richcompare(PyObject *self, PyObject *other, int op)
-{
-    if (PyDelta_Check(other)) {
-        int diff = delta_cmp(self, other);
-        return diff_to_bool(diff, op);
-    }
-    else {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-}
-
-static PyObject *delta_getstate(PyDateTime_Delta *self);
-
-static long
-delta_hash(PyDateTime_Delta *self)
-{
-    if (self->hashcode == -1) {
-        PyObject *temp = delta_getstate(self);
-        if (temp != NULL) {
-            self->hashcode = PyObject_Hash(temp);
-            Py_DECREF(temp);
-        }
-    }
-    return self->hashcode;
-}
-
-static PyObject *
-delta_multiply(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDelta_Check(left)) {
-        /* delta * ??? */
-        if (PyLong_Check(right))
-            result = multiply_int_timedelta(right,
-                            (PyDateTime_Delta *) left);
-        else if (PyFloat_Check(right))
-            result = multiply_float_timedelta(right,
-                            (PyDateTime_Delta *) left);
-    }
-    else if (PyLong_Check(left))
-        result = multiply_int_timedelta(left,
-                        (PyDateTime_Delta *) right);
-    else if (PyFloat_Check(left))
-        result = multiply_float_timedelta(left,
-                        (PyDateTime_Delta *) right);
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-static PyObject *
-delta_divide(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDelta_Check(left)) {
-        /* delta * ??? */
-        if (PyLong_Check(right))
-            result = divide_timedelta_int(
-                            (PyDateTime_Delta *)left,
-                            right);
-        else if (PyDelta_Check(right))
-            result = divide_timedelta_timedelta(
-                            (PyDateTime_Delta *)left,
-                            (PyDateTime_Delta *)right);
-    }
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-static PyObject *
-delta_truedivide(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDelta_Check(left)) {
-        if (PyDelta_Check(right))
-            result = truedivide_timedelta_timedelta(
-                            (PyDateTime_Delta *)left,
-                            (PyDateTime_Delta *)right);
-        else if (PyFloat_Check(right))
-            result = truedivide_timedelta_float(
-                            (PyDateTime_Delta *)left, right);
-        else if (PyLong_Check(right))
-            result = truedivide_timedelta_int(
-                            (PyDateTime_Delta *)left, right);
-    }
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-static PyObject *
-delta_remainder(PyObject *left, PyObject *right)
-{
-    PyObject *pyus_left;
-    PyObject *pyus_right;
-    PyObject *pyus_remainder;
-    PyObject *remainder;
-
-    if (!PyDelta_Check(left) || !PyDelta_Check(right)) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-
-    pyus_left = delta_to_microseconds((PyDateTime_Delta *)left);
-    if (pyus_left == NULL)
-        return NULL;
-
-    pyus_right = delta_to_microseconds((PyDateTime_Delta *)right);
-    if (pyus_right == NULL) {
-        Py_DECREF(pyus_left);
-        return NULL;
-    }
-
-    pyus_remainder = PyNumber_Remainder(pyus_left, pyus_right);
-    Py_DECREF(pyus_left);
-    Py_DECREF(pyus_right);
-    if (pyus_remainder == NULL)
-        return NULL;
-
-    remainder = microseconds_to_delta(pyus_remainder);
-    Py_DECREF(pyus_remainder);
-    if (remainder == NULL)
-        return NULL;
-
-    return remainder;
-}
-
-static PyObject *
-delta_divmod(PyObject *left, PyObject *right)
-{
-    PyObject *pyus_left;
-    PyObject *pyus_right;
-    PyObject *divmod;
-    PyObject *delta;
-    PyObject *result;
-
-    if (!PyDelta_Check(left) || !PyDelta_Check(right)) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-
-    pyus_left = delta_to_microseconds((PyDateTime_Delta *)left);
-    if (pyus_left == NULL)
-        return NULL;
-
-    pyus_right = delta_to_microseconds((PyDateTime_Delta *)right);
-    if (pyus_right == NULL) {
-        Py_DECREF(pyus_left);
-        return NULL;
-    }
-
-    divmod = PyNumber_Divmod(pyus_left, pyus_right);
-    Py_DECREF(pyus_left);
-    Py_DECREF(pyus_right);
-    if (divmod == NULL)
-        return NULL;
-
-    assert(PyTuple_Size(divmod) == 2);
-    delta = microseconds_to_delta(PyTuple_GET_ITEM(divmod, 1));
-    if (delta == NULL) {
-        Py_DECREF(divmod);
-        return NULL;
-    }
-    result = PyTuple_Pack(2, PyTuple_GET_ITEM(divmod, 0), delta);
-    Py_DECREF(delta);
-    Py_DECREF(divmod);
-    return result;
-}
-
-/* Fold in the value of the tag ("seconds", "weeks", etc) component of a
- * timedelta constructor.  sofar is the # of microseconds accounted for
- * so far, and there are factor microseconds per current unit, the number
- * of which is given by num.  num * factor is added to sofar in a
- * numerically careful way, and that's the result.  Any fractional
- * microseconds left over (this can happen if num is a float type) are
- * added into *leftover.
- * Note that there are many ways this can give an error (NULL) return.
- */
-static PyObject *
-accum(const char* tag, PyObject *sofar, PyObject *num, PyObject *factor,
-      double *leftover)
-{
-    PyObject *prod;
-    PyObject *sum;
-
-    assert(num != NULL);
-
-    if (PyLong_Check(num)) {
-        prod = PyNumber_Multiply(num, factor);
-        if (prod == NULL)
-            return NULL;
-        sum = PyNumber_Add(sofar, prod);
-        Py_DECREF(prod);
-        return sum;
-    }
-
-    if (PyFloat_Check(num)) {
-        double dnum;
-        double fracpart;
-        double intpart;
-        PyObject *x;
-        PyObject *y;
-
-        /* The Plan:  decompose num into an integer part and a
-         * fractional part, num = intpart + fracpart.
-         * Then num * factor ==
-         *      intpart * factor + fracpart * factor
-         * and the LHS can be computed exactly in long arithmetic.
-         * The RHS is again broken into an int part and frac part.
-         * and the frac part is added into *leftover.
-         */
-        dnum = PyFloat_AsDouble(num);
-        if (dnum == -1.0 && PyErr_Occurred())
-            return NULL;
-        fracpart = modf(dnum, &intpart);
-        x = PyLong_FromDouble(intpart);
-        if (x == NULL)
-            return NULL;
-
-        prod = PyNumber_Multiply(x, factor);
-        Py_DECREF(x);
-        if (prod == NULL)
-            return NULL;
-
-        sum = PyNumber_Add(sofar, prod);
-        Py_DECREF(prod);
-        if (sum == NULL)
-            return NULL;
-
-        if (fracpart == 0.0)
-            return sum;
-        /* So far we've lost no information.  Dealing with the
-         * fractional part requires float arithmetic, and may
-         * lose a little info.
-         */
-        assert(PyLong_Check(factor));
-        dnum = PyLong_AsDouble(factor);
-
-        dnum *= fracpart;
-        fracpart = modf(dnum, &intpart);
-        x = PyLong_FromDouble(intpart);
-        if (x == NULL) {
-            Py_DECREF(sum);
-            return NULL;
-        }
-
-        y = PyNumber_Add(sum, x);
-        Py_DECREF(sum);
-        Py_DECREF(x);
-        *leftover += fracpart;
-        return y;
-    }
-
-    PyErr_Format(PyExc_TypeError,
-                 "unsupported type for timedelta %s component: %s",
-                 tag, Py_TYPE(num)->tp_name);
-    return NULL;
-}
-
-static PyObject *
-delta_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
-    PyObject *self = NULL;
-
-    /* Argument objects. */
-    PyObject *day = NULL;
-    PyObject *second = NULL;
-    PyObject *us = NULL;
-    PyObject *ms = NULL;
-    PyObject *minute = NULL;
-    PyObject *hour = NULL;
-    PyObject *week = NULL;
-
-    PyObject *x = NULL;         /* running sum of microseconds */
-    PyObject *y = NULL;         /* temp sum of microseconds */
-    double leftover_us = 0.0;
-
-    static char *keywords[] = {
-        "days", "seconds", "microseconds", "milliseconds",
-        "minutes", "hours", "weeks", NULL
-    };
-
-    if (PyArg_ParseTupleAndKeywords(args, kw, "|OOOOOOO:__new__",
-                                    keywords,
-                                    &day, &second, &us,
-                                    &ms, &minute, &hour, &week) == 0)
-        goto Done;
-
-    x = PyLong_FromLong(0);
-    if (x == NULL)
-        goto Done;
-
-#define CLEANUP         \
-    Py_DECREF(x);       \
-    x = y;              \
-    if (x == NULL)      \
-        goto Done
-
-    if (us) {
-        y = accum("microseconds", x, us, us_per_us, &leftover_us);
-        CLEANUP;
-    }
-    if (ms) {
-        y = accum("milliseconds", x, ms, us_per_ms, &leftover_us);
-        CLEANUP;
-    }
-    if (second) {
-        y = accum("seconds", x, second, us_per_second, &leftover_us);
-        CLEANUP;
-    }
-    if (minute) {
-        y = accum("minutes", x, minute, us_per_minute, &leftover_us);
-        CLEANUP;
-    }
-    if (hour) {
-        y = accum("hours", x, hour, us_per_hour, &leftover_us);
-        CLEANUP;
-    }
-    if (day) {
-        y = accum("days", x, day, us_per_day, &leftover_us);
-        CLEANUP;
-    }
-    if (week) {
-        y = accum("weeks", x, week, us_per_week, &leftover_us);
-        CLEANUP;
-    }
-    if (leftover_us) {
-        /* Round to nearest whole # of us, and add into x. */
-        PyObject *temp = PyLong_FromLong(round_to_long(leftover_us));
-        if (temp == NULL) {
-            Py_DECREF(x);
-            goto Done;
-        }
-        y = PyNumber_Add(x, temp);
-        Py_DECREF(temp);
-        CLEANUP;
-    }
-
-    self = microseconds_to_delta_ex(x, type);
-    Py_DECREF(x);
-Done:
-    return self;
-
-#undef CLEANUP
-}
-
-static int
-delta_bool(PyDateTime_Delta *self)
-{
-    return (GET_TD_DAYS(self) != 0
-        || GET_TD_SECONDS(self) != 0
-        || GET_TD_MICROSECONDS(self) != 0);
-}
-
-static PyObject *
-delta_repr(PyDateTime_Delta *self)
-{
-    if (GET_TD_MICROSECONDS(self) != 0)
-        return PyUnicode_FromFormat("%s(%d, %d, %d)",
-                                    Py_TYPE(self)->tp_name,
-                                    GET_TD_DAYS(self),
-                                    GET_TD_SECONDS(self),
-                                    GET_TD_MICROSECONDS(self));
-    if (GET_TD_SECONDS(self) != 0)
-        return PyUnicode_FromFormat("%s(%d, %d)",
-                                    Py_TYPE(self)->tp_name,
-                                    GET_TD_DAYS(self),
-                                    GET_TD_SECONDS(self));
-
-    return PyUnicode_FromFormat("%s(%d)",
-                                Py_TYPE(self)->tp_name,
-                                GET_TD_DAYS(self));
-}
-
-static PyObject *
-delta_str(PyDateTime_Delta *self)
-{
-    int us = GET_TD_MICROSECONDS(self);
-    int seconds = GET_TD_SECONDS(self);
-    int minutes = divmod(seconds, 60, &seconds);
-    int hours = divmod(minutes, 60, &minutes);
-    int days = GET_TD_DAYS(self);
-
-    if (days) {
-        if (us)
-            return PyUnicode_FromFormat("%d day%s, %d:%02d:%02d.%06d",
-                                        days, (days == 1 || days == -1) ? "" : "s",
-                                        hours, minutes, seconds, us);
-        else
-            return PyUnicode_FromFormat("%d day%s, %d:%02d:%02d",
-                                        days, (days == 1 || days == -1) ? "" : "s",
-                                        hours, minutes, seconds);
-    } else {
-        if (us)
-            return PyUnicode_FromFormat("%d:%02d:%02d.%06d",
-                                        hours, minutes, seconds, us);
-        else
-            return PyUnicode_FromFormat("%d:%02d:%02d",
-                                        hours, minutes, seconds);
-    }
-
-}
-
-/* Pickle support, a simple use of __reduce__. */
-
-/* __getstate__ isn't exposed */
-static PyObject *
-delta_getstate(PyDateTime_Delta *self)
-{
-    return Py_BuildValue("iii", GET_TD_DAYS(self),
-                                GET_TD_SECONDS(self),
-                                GET_TD_MICROSECONDS(self));
-}
-
-static PyObject *
-delta_total_seconds(PyObject *self)
-{
-    PyObject *total_seconds;
-    PyObject *total_microseconds;
-    PyObject *one_million;
-
-    total_microseconds = delta_to_microseconds((PyDateTime_Delta *)self);
-    if (total_microseconds == NULL)
-        return NULL;
-
-    one_million = PyLong_FromLong(1000000L);
-    if (one_million == NULL) {
-        Py_DECREF(total_microseconds);
-        return NULL;
-    }
-
-    total_seconds = PyNumber_TrueDivide(total_microseconds, one_million);
-
-    Py_DECREF(total_microseconds);
-    Py_DECREF(one_million);
-    return total_seconds;
-}
-
-static PyObject *
-delta_reduce(PyDateTime_Delta* self)
-{
-    return Py_BuildValue("ON", Py_TYPE(self), delta_getstate(self));
-}
-
-#define OFFSET(field)  offsetof(PyDateTime_Delta, field)
-
-static PyMemberDef delta_members[] = {
-
-    {"days",         T_INT, OFFSET(days),         READONLY,
-     PyDoc_STR("Number of days.")},
-
-    {"seconds",      T_INT, OFFSET(seconds),      READONLY,
-     PyDoc_STR("Number of seconds (>= 0 and less than 1 day).")},
-
-    {"microseconds", T_INT, OFFSET(microseconds), READONLY,
-     PyDoc_STR("Number of microseconds (>= 0 and less than 1 second).")},
-    {NULL}
-};
-
-static PyMethodDef delta_methods[] = {
-    {"total_seconds", (PyCFunction)delta_total_seconds, METH_NOARGS,
-     PyDoc_STR("Total seconds in the duration.")},
-
-    {"__reduce__", (PyCFunction)delta_reduce, METH_NOARGS,
-     PyDoc_STR("__reduce__() -> (cls, state)")},
-
-    {NULL,      NULL},
-};
-
-static char delta_doc[] =
-PyDoc_STR("Difference between two datetime values.");
-
-static PyNumberMethods delta_as_number = {
-    delta_add,                                  /* nb_add */
-    delta_subtract,                             /* nb_subtract */
-    delta_multiply,                             /* nb_multiply */
-    delta_remainder,                            /* nb_remainder */
-    delta_divmod,                               /* nb_divmod */
-    0,                                          /* nb_power */
-    (unaryfunc)delta_negative,                  /* nb_negative */
-    (unaryfunc)delta_positive,                  /* nb_positive */
-    (unaryfunc)delta_abs,                       /* nb_absolute */
-    (inquiry)delta_bool,                        /* nb_bool */
-    0,                                          /*nb_invert*/
-    0,                                          /*nb_lshift*/
-    0,                                          /*nb_rshift*/
-    0,                                          /*nb_and*/
-    0,                                          /*nb_xor*/
-    0,                                          /*nb_or*/
-    0,                                          /*nb_int*/
-    0,                                          /*nb_reserved*/
-    0,                                          /*nb_float*/
-    0,                                          /*nb_inplace_add*/
-    0,                                          /*nb_inplace_subtract*/
-    0,                                          /*nb_inplace_multiply*/
-    0,                                          /*nb_inplace_remainder*/
-    0,                                          /*nb_inplace_power*/
-    0,                                          /*nb_inplace_lshift*/
-    0,                                          /*nb_inplace_rshift*/
-    0,                                          /*nb_inplace_and*/
-    0,                                          /*nb_inplace_xor*/
-    0,                                          /*nb_inplace_or*/
-    delta_divide,                               /* nb_floor_divide */
-    delta_truedivide,                           /* nb_true_divide */
-    0,                                          /* nb_inplace_floor_divide */
-    0,                                          /* nb_inplace_true_divide */
-};
-
-static PyTypeObject PyDateTime_DeltaType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.timedelta",                               /* tp_name */
-    sizeof(PyDateTime_Delta),                           /* tp_basicsize */
-    0,                                                  /* tp_itemsize */
-    0,                                                  /* tp_dealloc */
-    0,                                                  /* tp_print */
-    0,                                                  /* tp_getattr */
-    0,                                                  /* tp_setattr */
-    0,                                                  /* tp_reserved */
-    (reprfunc)delta_repr,                               /* tp_repr */
-    &delta_as_number,                                   /* tp_as_number */
-    0,                                                  /* tp_as_sequence */
-    0,                                                  /* tp_as_mapping */
-    (hashfunc)delta_hash,                               /* tp_hash */
-    0,                                                  /* tp_call */
-    (reprfunc)delta_str,                                /* tp_str */
-    PyObject_GenericGetAttr,                            /* tp_getattro */
-    0,                                                  /* tp_setattro */
-    0,                                                  /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,           /* tp_flags */
-    delta_doc,                                          /* tp_doc */
-    0,                                                  /* tp_traverse */
-    0,                                                  /* tp_clear */
-    delta_richcompare,                                  /* tp_richcompare */
-    0,                                                  /* tp_weaklistoffset */
-    0,                                                  /* tp_iter */
-    0,                                                  /* tp_iternext */
-    delta_methods,                                      /* tp_methods */
-    delta_members,                                      /* tp_members */
-    0,                                                  /* tp_getset */
-    0,                                                  /* tp_base */
-    0,                                                  /* tp_dict */
-    0,                                                  /* tp_descr_get */
-    0,                                                  /* tp_descr_set */
-    0,                                                  /* tp_dictoffset */
-    0,                                                  /* tp_init */
-    0,                                                  /* tp_alloc */
-    delta_new,                                          /* tp_new */
-    0,                                                  /* tp_free */
-};
-
-/*
- * PyDateTime_Date implementation.
- */
-
-/* Accessor properties. */
-
-static PyObject *
-date_year(PyDateTime_Date *self, void *unused)
-{
-    return PyLong_FromLong(GET_YEAR(self));
-}
-
-static PyObject *
-date_month(PyDateTime_Date *self, void *unused)
-{
-    return PyLong_FromLong(GET_MONTH(self));
-}
-
-static PyObject *
-date_day(PyDateTime_Date *self, void *unused)
-{
-    return PyLong_FromLong(GET_DAY(self));
-}
-
-static PyGetSetDef date_getset[] = {
-    {"year",        (getter)date_year},
-    {"month",       (getter)date_month},
-    {"day",         (getter)date_day},
-    {NULL}
-};
-
-/* Constructors. */
-
-static char *date_kws[] = {"year", "month", "day", NULL};
-
-static PyObject *
-date_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
-    PyObject *self = NULL;
-    PyObject *state;
-    int year;
-    int month;
-    int day;
-
-    /* Check for invocation from pickle with __getstate__ state */
-    if (PyTuple_GET_SIZE(args) == 1 &&
-        PyBytes_Check(state = PyTuple_GET_ITEM(args, 0)) &&
-        PyBytes_GET_SIZE(state) == _PyDateTime_DATE_DATASIZE &&
-        MONTH_IS_SANE(PyBytes_AS_STRING(state)[2]))
-    {
-        PyDateTime_Date *me;
-
-        me = (PyDateTime_Date *) (type->tp_alloc(type, 0));
-        if (me != NULL) {
-            char *pdata = PyBytes_AS_STRING(state);
-            memcpy(me->data, pdata, _PyDateTime_DATE_DATASIZE);
-            me->hashcode = -1;
-        }
-        return (PyObject *)me;
-    }
-
-    if (PyArg_ParseTupleAndKeywords(args, kw, "iii", date_kws,
-                                    &year, &month, &day)) {
-        if (check_date_args(year, month, day) < 0)
-            return NULL;
-        self = new_date_ex(year, month, day, type);
-    }
-    return self;
-}
-
-/* Return new date from localtime(t). */
-static PyObject *
-date_local_from_time_t(PyObject *cls, double ts)
-{
-    struct tm *tm;
-    time_t t;
-    PyObject *result = NULL;
-
-    t = _PyTime_DoubleToTimet(ts);
-    if (t == (time_t)-1 && PyErr_Occurred())
-        return NULL;
-    tm = localtime(&t);
-    if (tm)
-        result = PyObject_CallFunction(cls, "iii",
-                                       tm->tm_year + 1900,
-                                       tm->tm_mon + 1,
-                                       tm->tm_mday);
-    else
-        PyErr_SetString(PyExc_ValueError,
-                        "timestamp out of range for "
-                        "platform localtime() function");
-    return result;
-}
-
-/* Return new date from current time.
- * We say this is equivalent to fromtimestamp(time.time()), and the
- * only way to be sure of that is to *call* time.time().  That's not
- * generally the same as calling C's time.
- */
-static PyObject *
-date_today(PyObject *cls, PyObject *dummy)
-{
-    PyObject *time;
-    PyObject *result;
-
-    time = time_time();
-    if (time == NULL)
-        return NULL;
-
-    /* Note well:  today() is a class method, so this may not call
-     * date.fromtimestamp.  For example, it may call
-     * datetime.fromtimestamp.  That's why we need all the accuracy
-     * time.time() delivers; if someone were gonzo about optimization,
-     * date.today() could get away with plain C time().
-     */
-    result = PyObject_CallMethod(cls, "fromtimestamp", "O", time);
-    Py_DECREF(time);
-    return result;
-}
-
-/* Return new date from given timestamp (Python timestamp -- a double). */
-static PyObject *
-date_fromtimestamp(PyObject *cls, PyObject *args)
-{
-    double timestamp;
-    PyObject *result = NULL;
-
-    if (PyArg_ParseTuple(args, "d:fromtimestamp", &timestamp))
-        result = date_local_from_time_t(cls, timestamp);
-    return result;
-}
-
-/* Return new date from proleptic Gregorian ordinal.  Raises ValueError if
- * the ordinal is out of range.
- */
-static PyObject *
-date_fromordinal(PyObject *cls, PyObject *args)
-{
-    PyObject *result = NULL;
-    int ordinal;
-
-    if (PyArg_ParseTuple(args, "i:fromordinal", &ordinal)) {
-        int year;
-        int month;
-        int day;
-
-        if (ordinal < 1)
-            PyErr_SetString(PyExc_ValueError, "ordinal must be "
-                                              ">= 1");
-        else {
-            ord_to_ymd(ordinal, &year, &month, &day);
-            result = PyObject_CallFunction(cls, "iii",
-                                           year, month, day);
-        }
-    }
-    return result;
-}
-
-/*
- * Date arithmetic.
- */
-
-/* date + timedelta -> date.  If arg negate is true, subtract the timedelta
- * instead.
- */
-static PyObject *
-add_date_timedelta(PyDateTime_Date *date, PyDateTime_Delta *delta, int negate)
-{
-    PyObject *result = NULL;
-    int year = GET_YEAR(date);
-    int month = GET_MONTH(date);
-    int deltadays = GET_TD_DAYS(delta);
-    /* C-level overflow is impossible because |deltadays| < 1e9. */
-    int day = GET_DAY(date) + (negate ? -deltadays : deltadays);
-
-    if (normalize_date(&year, &month, &day) >= 0)
-        result = new_date(year, month, day);
-    return result;
-}
-
-static PyObject *
-date_add(PyObject *left, PyObject *right)
-{
-    if (PyDateTime_Check(left) || PyDateTime_Check(right)) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-    if (PyDate_Check(left)) {
-        /* date + ??? */
-        if (PyDelta_Check(right))
-            /* date + delta */
-            return add_date_timedelta((PyDateTime_Date *) left,
-                                      (PyDateTime_Delta *) right,
-                                      0);
-    }
-    else {
-        /* ??? + date
-         * 'right' must be one of us, or we wouldn't have been called
-         */
-        if (PyDelta_Check(left))
-            /* delta + date */
-            return add_date_timedelta((PyDateTime_Date *) right,
-                                      (PyDateTime_Delta *) left,
-                                      0);
-    }
-    Py_INCREF(Py_NotImplemented);
-    return Py_NotImplemented;
-}
-
-static PyObject *
-date_subtract(PyObject *left, PyObject *right)
-{
-    if (PyDateTime_Check(left) || PyDateTime_Check(right)) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-    if (PyDate_Check(left)) {
-        if (PyDate_Check(right)) {
-            /* date - date */
-            int left_ord = ymd_to_ord(GET_YEAR(left),
-                                      GET_MONTH(left),
-                                      GET_DAY(left));
-            int right_ord = ymd_to_ord(GET_YEAR(right),
-                                       GET_MONTH(right),
-                                       GET_DAY(right));
-            return new_delta(left_ord - right_ord, 0, 0, 0);
-        }
-        if (PyDelta_Check(right)) {
-            /* date - delta */
-            return add_date_timedelta((PyDateTime_Date *) left,
-                                      (PyDateTime_Delta *) right,
-                                      1);
-        }
-    }
-    Py_INCREF(Py_NotImplemented);
-    return Py_NotImplemented;
-}
-
-
-/* Various ways to turn a date into a string. */
-
-static PyObject *
-date_repr(PyDateTime_Date *self)
-{
-    return PyUnicode_FromFormat("%s(%d, %d, %d)",
-                                Py_TYPE(self)->tp_name,
-                                GET_YEAR(self), GET_MONTH(self), GET_DAY(self));
-}
-
-static PyObject *
-date_isoformat(PyDateTime_Date *self)
-{
-    return PyUnicode_FromFormat("%04d-%02d-%02d",
-                                GET_YEAR(self), GET_MONTH(self), GET_DAY(self));
-}
-
-/* str() calls the appropriate isoformat() method. */
-static PyObject *
-date_str(PyDateTime_Date *self)
-{
-    return PyObject_CallMethod((PyObject *)self, "isoformat", "()");
-}
-
-
-static PyObject *
-date_ctime(PyDateTime_Date *self)
-{
-    return format_ctime(self, 0, 0, 0);
-}
-
-static PyObject *
-date_strftime(PyDateTime_Date *self, PyObject *args, PyObject *kw)
-{
-    /* This method can be inherited, and needs to call the
-     * timetuple() method appropriate to self's class.
-     */
-    PyObject *result;
-    PyObject *tuple;
-    PyObject *format;
-    static char *keywords[] = {"format", NULL};
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "U:strftime", keywords,
-                                      &format))
-        return NULL;
-
-    tuple = PyObject_CallMethod((PyObject *)self, "timetuple", "()");
-    if (tuple == NULL)
-        return NULL;
-    result = wrap_strftime((PyObject *)self, format, tuple,
-                           (PyObject *)self);
-    Py_DECREF(tuple);
-    return result;
-}
-
-static PyObject *
-date_format(PyDateTime_Date *self, PyObject *args)
-{
-    PyObject *format;
-
-    if (!PyArg_ParseTuple(args, "U:__format__", &format))
-        return NULL;
-
-    /* if the format is zero length, return str(self) */
-    if (PyUnicode_GetSize(format) == 0)
-        return PyObject_Str((PyObject *)self);
-
-    return PyObject_CallMethod((PyObject *)self, "strftime", "O", format);
-}
-
-/* ISO methods. */
-
-static PyObject *
-date_isoweekday(PyDateTime_Date *self)
-{
-    int dow = weekday(GET_YEAR(self), GET_MONTH(self), GET_DAY(self));
-
-    return PyLong_FromLong(dow + 1);
-}
-
-static PyObject *
-date_isocalendar(PyDateTime_Date *self)
-{
-    int  year         = GET_YEAR(self);
-    int  week1_monday = iso_week1_monday(year);
-    int today         = ymd_to_ord(year, GET_MONTH(self), GET_DAY(self));
-    int  week;
-    int  day;
-
-    week = divmod(today - week1_monday, 7, &day);
-    if (week < 0) {
-        --year;
-        week1_monday = iso_week1_monday(year);
-        week = divmod(today - week1_monday, 7, &day);
-    }
-    else if (week >= 52 && today >= iso_week1_monday(year + 1)) {
-        ++year;
-        week = 0;
-    }
-    return Py_BuildValue("iii", year, week + 1, day + 1);
-}
-
-/* Miscellaneous methods. */
-
-static PyObject *
-date_richcompare(PyObject *self, PyObject *other, int op)
-{
-    if (PyDate_Check(other)) {
-        int diff = memcmp(((PyDateTime_Date *)self)->data,
-                          ((PyDateTime_Date *)other)->data,
-                          _PyDateTime_DATE_DATASIZE);
-        return diff_to_bool(diff, op);
-    }
-    else {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-}
-
-static PyObject *
-date_timetuple(PyDateTime_Date *self)
-{
-    return build_struct_time(GET_YEAR(self),
-                             GET_MONTH(self),
-                             GET_DAY(self),
-                             0, 0, 0, -1);
-}
-
-static PyObject *
-date_replace(PyDateTime_Date *self, PyObject *args, PyObject *kw)
-{
-    PyObject *clone;
-    PyObject *tuple;
-    int year = GET_YEAR(self);
-    int month = GET_MONTH(self);
-    int day = GET_DAY(self);
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "|iii:replace", date_kws,
-                                      &year, &month, &day))
-        return NULL;
-    tuple = Py_BuildValue("iii", year, month, day);
-    if (tuple == NULL)
-        return NULL;
-    clone = date_new(Py_TYPE(self), tuple, NULL);
-    Py_DECREF(tuple);
-    return clone;
-}
-
-/*
-    Borrowed from stringobject.c, originally it was string_hash()
-*/
-static long
-generic_hash(unsigned char *data, int len)
-{
-    register unsigned char *p;
-    register long x;
-
-    p = (unsigned char *) data;
-    x = *p << 7;
-    while (--len >= 0)
-        x = (1000003*x) ^ *p++;
-    x ^= len;
-    if (x == -1)
-        x = -2;
-
-    return x;
-}
-
-
-static PyObject *date_getstate(PyDateTime_Date *self);
-
-static long
-date_hash(PyDateTime_Date *self)
-{
-    if (self->hashcode == -1)
-        self->hashcode = generic_hash(
-            (unsigned char *)self->data, _PyDateTime_DATE_DATASIZE);
-
-    return self->hashcode;
-}
-
-static PyObject *
-date_toordinal(PyDateTime_Date *self)
-{
-    return PyLong_FromLong(ymd_to_ord(GET_YEAR(self), GET_MONTH(self),
-                                     GET_DAY(self)));
-}
-
-static PyObject *
-date_weekday(PyDateTime_Date *self)
-{
-    int dow = weekday(GET_YEAR(self), GET_MONTH(self), GET_DAY(self));
-
-    return PyLong_FromLong(dow);
-}
-
-/* Pickle support, a simple use of __reduce__. */
-
-/* __getstate__ isn't exposed */
-static PyObject *
-date_getstate(PyDateTime_Date *self)
-{
-    PyObject* field;
-    field = PyBytes_FromStringAndSize((char*)self->data,
-                                       _PyDateTime_DATE_DATASIZE);
-    return Py_BuildValue("(N)", field);
-}
-
-static PyObject *
-date_reduce(PyDateTime_Date *self, PyObject *arg)
-{
-    return Py_BuildValue("(ON)", Py_TYPE(self), date_getstate(self));
-}
-
-static PyMethodDef date_methods[] = {
-
-    /* Class methods: */
-
-    {"fromtimestamp", (PyCFunction)date_fromtimestamp, METH_VARARGS |
-                                                       METH_CLASS,
-     PyDoc_STR("timestamp -> local date from a POSIX timestamp (like "
-               "time.time()).")},
-
-    {"fromordinal", (PyCFunction)date_fromordinal,      METH_VARARGS |
-                                                    METH_CLASS,
-     PyDoc_STR("int -> date corresponding to a proleptic Gregorian "
-               "ordinal.")},
-
-    {"today",         (PyCFunction)date_today,   METH_NOARGS | METH_CLASS,
-     PyDoc_STR("Current date or datetime:  same as "
-               "self.__class__.fromtimestamp(time.time()).")},
-
-    /* Instance methods: */
-
-    {"ctime",       (PyCFunction)date_ctime,        METH_NOARGS,
-     PyDoc_STR("Return ctime() style string.")},
-
-    {"strftime",        (PyCFunction)date_strftime,     METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("format -> strftime() style string.")},
-
-    {"__format__",      (PyCFunction)date_format,       METH_VARARGS,
-     PyDoc_STR("Formats self with strftime.")},
-
-    {"timetuple",   (PyCFunction)date_timetuple,    METH_NOARGS,
-     PyDoc_STR("Return time tuple, compatible with time.localtime().")},
-
-    {"isocalendar", (PyCFunction)date_isocalendar,  METH_NOARGS,
-     PyDoc_STR("Return a 3-tuple containing ISO year, week number, and "
-               "weekday.")},
-
-    {"isoformat",   (PyCFunction)date_isoformat,        METH_NOARGS,
-     PyDoc_STR("Return string in ISO 8601 format, YYYY-MM-DD.")},
-
-    {"isoweekday",  (PyCFunction)date_isoweekday,   METH_NOARGS,
-     PyDoc_STR("Return the day of the week represented by the date.\n"
-               "Monday == 1 ... Sunday == 7")},
-
-    {"toordinal",   (PyCFunction)date_toordinal,    METH_NOARGS,
-     PyDoc_STR("Return proleptic Gregorian ordinal.  January 1 of year "
-               "1 is day 1.")},
-
-    {"weekday",     (PyCFunction)date_weekday,      METH_NOARGS,
-     PyDoc_STR("Return the day of the week represented by the date.\n"
-               "Monday == 0 ... Sunday == 6")},
-
-    {"replace",     (PyCFunction)date_replace,      METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("Return date with new specified fields.")},
-
-    {"__reduce__", (PyCFunction)date_reduce,        METH_NOARGS,
-     PyDoc_STR("__reduce__() -> (cls, state)")},
-
-    {NULL,      NULL}
-};
-
-static char date_doc[] =
-PyDoc_STR("date(year, month, day) --> date object");
-
-static PyNumberMethods date_as_number = {
-    date_add,                                           /* nb_add */
-    date_subtract,                                      /* nb_subtract */
-    0,                                                  /* nb_multiply */
-    0,                                                  /* nb_remainder */
-    0,                                                  /* nb_divmod */
-    0,                                                  /* nb_power */
-    0,                                                  /* nb_negative */
-    0,                                                  /* nb_positive */
-    0,                                                  /* nb_absolute */
-    0,                                                  /* nb_bool */
-};
-
-static PyTypeObject PyDateTime_DateType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.date",                                    /* tp_name */
-    sizeof(PyDateTime_Date),                            /* tp_basicsize */
-    0,                                                  /* tp_itemsize */
-    0,                                                  /* tp_dealloc */
-    0,                                                  /* tp_print */
-    0,                                                  /* tp_getattr */
-    0,                                                  /* tp_setattr */
-    0,                                                  /* tp_reserved */
-    (reprfunc)date_repr,                                /* tp_repr */
-    &date_as_number,                                    /* tp_as_number */
-    0,                                                  /* tp_as_sequence */
-    0,                                                  /* tp_as_mapping */
-    (hashfunc)date_hash,                                /* tp_hash */
-    0,                                                  /* tp_call */
-    (reprfunc)date_str,                                 /* tp_str */
-    PyObject_GenericGetAttr,                            /* tp_getattro */
-    0,                                                  /* tp_setattro */
-    0,                                                  /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,           /* tp_flags */
-    date_doc,                                           /* tp_doc */
-    0,                                                  /* tp_traverse */
-    0,                                                  /* tp_clear */
-    date_richcompare,                                   /* tp_richcompare */
-    0,                                                  /* tp_weaklistoffset */
-    0,                                                  /* tp_iter */
-    0,                                                  /* tp_iternext */
-    date_methods,                                       /* tp_methods */
-    0,                                                  /* tp_members */
-    date_getset,                                        /* tp_getset */
-    0,                                                  /* tp_base */
-    0,                                                  /* tp_dict */
-    0,                                                  /* tp_descr_get */
-    0,                                                  /* tp_descr_set */
-    0,                                                  /* tp_dictoffset */
-    0,                                                  /* tp_init */
-    0,                                                  /* tp_alloc */
-    date_new,                                           /* tp_new */
-    0,                                                  /* tp_free */
-};
-
-/*
- * PyDateTime_TZInfo implementation.
- */
-
-/* This is a pure abstract base class, so doesn't do anything beyond
- * raising NotImplemented exceptions.  Real tzinfo classes need
- * to derive from this.  This is mostly for clarity, and for efficiency in
- * datetime and time constructors (their tzinfo arguments need to
- * be subclasses of this tzinfo class, which is easy and quick to check).
- *
- * Note:  For reasons having to do with pickling of subclasses, we have
- * to allow tzinfo objects to be instantiated.  This wasn't an issue
- * in the Python implementation (__init__() could raise NotImplementedError
- * there without ill effect), but doing so in the C implementation hit a
- * brick wall.
- */
-
-static PyObject *
-tzinfo_nogo(const char* methodname)
-{
-    PyErr_Format(PyExc_NotImplementedError,
-                 "a tzinfo subclass must implement %s()",
-                 methodname);
-    return NULL;
-}
-
-/* Methods.  A subclass must implement these. */
-
-static PyObject *
-tzinfo_tzname(PyDateTime_TZInfo *self, PyObject *dt)
-{
-    return tzinfo_nogo("tzname");
-}
-
-static PyObject *
-tzinfo_utcoffset(PyDateTime_TZInfo *self, PyObject *dt)
-{
-    return tzinfo_nogo("utcoffset");
-}
-
-static PyObject *
-tzinfo_dst(PyDateTime_TZInfo *self, PyObject *dt)
-{
-    return tzinfo_nogo("dst");
-}
-
-
-static PyObject *add_datetime_timedelta(PyDateTime_DateTime *date,
-                                        PyDateTime_Delta *delta,
-                                        int factor);
-static PyObject *datetime_utcoffset(PyObject *self, PyObject *);
-static PyObject *datetime_dst(PyObject *self, PyObject *);
-
-static PyObject *
-tzinfo_fromutc(PyDateTime_TZInfo *self, PyObject *dt)
-{
-    PyObject *result = NULL;
-    PyObject *off = NULL, *dst = NULL;
-    PyDateTime_Delta *delta = NULL;
-
-    if (!PyDateTime_Check(dt)) {
-        PyErr_SetString(PyExc_TypeError,
-                        "fromutc: argument must be a datetime");
-        return NULL;
-    }
-    if (GET_DT_TZINFO(dt) != (PyObject *)self) {
-        PyErr_SetString(PyExc_ValueError, "fromutc: dt.tzinfo "
-                        "is not self");
-        return NULL;
-    }
-
-    off = datetime_utcoffset(dt, NULL);
-    if (off == NULL)
-        return NULL;
-    if (off == Py_None) {
-        PyErr_SetString(PyExc_ValueError, "fromutc: non-None "
-                        "utcoffset() result required");
-        goto Fail;
-    }
-
-    dst = datetime_dst(dt, NULL);
-    if (dst == NULL)
-        goto Fail;
-    if (dst == Py_None) {
-        PyErr_SetString(PyExc_ValueError, "fromutc: non-None "
-                        "dst() result required");
-        goto Fail;
-    }
-
-    delta = (PyDateTime_Delta *)delta_subtract(off, dst);
-    if (delta == NULL)
-        goto Fail;
-    result = add_datetime_timedelta((PyDateTime_DateTime *)dt, delta, 1);
-    if (result == NULL)
-        goto Fail;
-
-    Py_DECREF(dst);
-    dst = call_dst(GET_DT_TZINFO(dt), result);
-    if (dst == NULL)
-        goto Fail;
-    if (dst == Py_None)
-        goto Inconsistent;
-    if (delta_bool(delta) != 0) {
-        PyObject *temp = result;
-        result = add_datetime_timedelta((PyDateTime_DateTime *)result,
-                                        (PyDateTime_Delta *)dst, 1);
-        Py_DECREF(temp);
-        if (result == NULL)
-            goto Fail;
-    }
-    Py_DECREF(delta);
-    Py_DECREF(dst);
-    Py_DECREF(off);
-    return result;
-
-Inconsistent:
-    PyErr_SetString(PyExc_ValueError, "fromutc: tz.dst() gave"
-                    "inconsistent results; cannot convert");
-
-    /* fall thru to failure */
-Fail:
-    Py_XDECREF(off);
-    Py_XDECREF(dst);
-    Py_XDECREF(delta);
-    Py_XDECREF(result);
-    return NULL;
-}
-
-/*
- * Pickle support.  This is solely so that tzinfo subclasses can use
- * pickling -- tzinfo itself is supposed to be uninstantiable.
- */
-
-static PyObject *
-tzinfo_reduce(PyObject *self)
-{
-    PyObject *args, *state, *tmp;
-    PyObject *getinitargs, *getstate;
-
-    tmp = PyTuple_New(0);
-    if (tmp == NULL)
-        return NULL;
-
-    getinitargs = PyObject_GetAttrString(self, "__getinitargs__");
-    if (getinitargs != NULL) {
-        args = PyObject_CallObject(getinitargs, tmp);
-        Py_DECREF(getinitargs);
-        if (args == NULL) {
-            Py_DECREF(tmp);
-            return NULL;
-        }
-    }
-    else {
-        PyErr_Clear();
-        args = tmp;
-        Py_INCREF(args);
-    }
-
-    getstate = PyObject_GetAttrString(self, "__getstate__");
-    if (getstate != NULL) {
-        state = PyObject_CallObject(getstate, tmp);
-        Py_DECREF(getstate);
-        if (state == NULL) {
-            Py_DECREF(args);
-            Py_DECREF(tmp);
-            return NULL;
-        }
-    }
-    else {
-        PyObject **dictptr;
-        PyErr_Clear();
-        state = Py_None;
-        dictptr = _PyObject_GetDictPtr(self);
-        if (dictptr && *dictptr && PyDict_Size(*dictptr))
-            state = *dictptr;
-        Py_INCREF(state);
-    }
-
-    Py_DECREF(tmp);
-
-    if (state == Py_None) {
-        Py_DECREF(state);
-        return Py_BuildValue("(ON)", Py_TYPE(self), args);
-    }
-    else
-        return Py_BuildValue("(ONN)", Py_TYPE(self), args, state);
-}
-
-static PyMethodDef tzinfo_methods[] = {
-
-    {"tzname",          (PyCFunction)tzinfo_tzname,             METH_O,
-     PyDoc_STR("datetime -> string name of time zone.")},
-
-    {"utcoffset",       (PyCFunction)tzinfo_utcoffset,          METH_O,
-     PyDoc_STR("datetime -> timedelta showing offset from UTC, negative "
-           "values indicating West of UTC")},
-
-    {"dst",             (PyCFunction)tzinfo_dst,                METH_O,
-     PyDoc_STR("datetime -> DST offset in minutes east of UTC.")},
-
-    {"fromutc",         (PyCFunction)tzinfo_fromutc,            METH_O,
-     PyDoc_STR("datetime in UTC -> datetime in local time.")},
-
-    {"__reduce__",  (PyCFunction)tzinfo_reduce,             METH_NOARGS,
-     PyDoc_STR("-> (cls, state)")},
-
-    {NULL, NULL}
-};
-
-static char tzinfo_doc[] =
-PyDoc_STR("Abstract base class for time zone info objects.");
-
-static PyTypeObject PyDateTime_TZInfoType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.tzinfo",                          /* tp_name */
-    sizeof(PyDateTime_TZInfo),                  /* tp_basicsize */
-    0,                                          /* tp_itemsize */
-    0,                                          /* tp_dealloc */
-    0,                                          /* tp_print */
-    0,                                          /* tp_getattr */
-    0,                                          /* tp_setattr */
-    0,                                          /* tp_reserved */
-    0,                                          /* tp_repr */
-    0,                                          /* tp_as_number */
-    0,                                          /* tp_as_sequence */
-    0,                                          /* tp_as_mapping */
-    0,                                          /* tp_hash */
-    0,                                          /* tp_call */
-    0,                                          /* tp_str */
-    PyObject_GenericGetAttr,                    /* tp_getattro */
-    0,                                          /* tp_setattro */
-    0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,   /* tp_flags */
-    tzinfo_doc,                                 /* tp_doc */
-    0,                                          /* tp_traverse */
-    0,                                          /* tp_clear */
-    0,                                          /* tp_richcompare */
-    0,                                          /* tp_weaklistoffset */
-    0,                                          /* tp_iter */
-    0,                                          /* tp_iternext */
-    tzinfo_methods,                             /* tp_methods */
-    0,                                          /* tp_members */
-    0,                                          /* tp_getset */
-    0,                                          /* tp_base */
-    0,                                          /* tp_dict */
-    0,                                          /* tp_descr_get */
-    0,                                          /* tp_descr_set */
-    0,                                          /* tp_dictoffset */
-    0,                                          /* tp_init */
-    0,                                          /* tp_alloc */
-    PyType_GenericNew,                          /* tp_new */
-    0,                                          /* tp_free */
-};
-
-static char *timezone_kws[] = {"offset", "name", NULL};
-
-static PyObject *
-timezone_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
-    PyObject *offset;
-    PyObject *name = NULL;
-    if (PyArg_ParseTupleAndKeywords(args, kw, "O!|O!:timezone", timezone_kws,
-                                    &PyDateTime_DeltaType, &offset,
-                                    &PyUnicode_Type, &name))
-        return new_timezone(offset, name);
-
-    return NULL;
-}
-
-static void
-timezone_dealloc(PyDateTime_TimeZone *self)
-{
-    Py_CLEAR(self->offset);
-    Py_CLEAR(self->name);
-    Py_TYPE(self)->tp_free((PyObject *)self);
-}
-
-static PyObject *
-timezone_richcompare(PyDateTime_TimeZone *self,
-                     PyDateTime_TimeZone *other, int op)
-{
-    if (op != Py_EQ && op != Py_NE) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-    return delta_richcompare(self->offset, other->offset, op);
-}
-
-static long
-timezone_hash(PyDateTime_TimeZone *self)
-{
-    return delta_hash((PyDateTime_Delta *)self->offset);
-}
-
-/* Check argument type passed to tzname, utcoffset, or dst methods.
-   Returns 0 for good argument.  Returns -1 and sets exception info
-   otherwise.
- */
-static int
-_timezone_check_argument(PyObject *dt, const char *meth)
-{
-    if (dt == Py_None || PyDateTime_Check(dt))
-        return 0;
-    PyErr_Format(PyExc_TypeError, "%s(dt) argument must be a datetime instance"
-                 " or None, not %.200s", meth, Py_TYPE(dt)->tp_name);
-    return -1;
-}
-
-static PyObject *
-timezone_repr(PyDateTime_TimeZone *self)
-{
-    /* Note that although timezone is not subclassable, it is convenient
-       to use Py_TYPE(self)->tp_name here. */
-    const char *type_name = Py_TYPE(self)->tp_name;
-
-    if (((PyObject *)self) == PyDateTime_TimeZone_UTC)
-        return PyUnicode_FromFormat("%s.utc", type_name);
-
-    if (self->name == NULL)
-        return PyUnicode_FromFormat("%s(%R)", type_name, self->offset);
-
-    return PyUnicode_FromFormat("%s(%R, %R)", type_name, self->offset,
-                                self->name);
-}
-
-
-static PyObject *
-timezone_str(PyDateTime_TimeZone *self)
-{
-    char buf[10];
-    int hours, minutes, seconds;
-    PyObject *offset;
-    char sign;
-
-    if (self->name != NULL) {
-        Py_INCREF(self->name);
-        return self->name;
-    }
-    /* Offset is normalized, so it is negative if days < 0 */
-    if (GET_TD_DAYS(self->offset) < 0) {
-        sign = '-';
-        offset = delta_negative((PyDateTime_Delta *)self->offset);
-        if (offset == NULL)
-            return NULL;
-    }
-    else {
-        sign = '+';
-        offset = self->offset;
-        Py_INCREF(offset);
-    }
-    /* Offset is not negative here. */
-    seconds = GET_TD_SECONDS(offset);
-    Py_DECREF(offset);
-    minutes = divmod(seconds, 60, &seconds);
-    hours = divmod(minutes, 60, &minutes);
-    assert(seconds == 0);
-    /* XXX ignore sub-minute data, curently not allowed. */
-    PyOS_snprintf(buf, sizeof(buf), "UTC%c%02d:%02d", sign, hours, minutes);
-
-    return PyUnicode_FromString(buf);
-}
-
-static PyObject *
-timezone_tzname(PyDateTime_TimeZone *self, PyObject *dt)
-{
-    if (_timezone_check_argument(dt, "tzname") == -1)
-        return NULL;
-
-    return timezone_str(self);
-}
-
-static PyObject *
-timezone_utcoffset(PyDateTime_TimeZone *self, PyObject *dt)
-{
-    if (_timezone_check_argument(dt, "utcoffset") == -1)
-        return NULL;
-
-    Py_INCREF(self->offset);
-    return self->offset;
-}
-
-static PyObject *
-timezone_dst(PyObject *self, PyObject *dt)
-{
-    if (_timezone_check_argument(dt, "dst") == -1)
-        return NULL;
-
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-timezone_fromutc(PyDateTime_TimeZone *self, PyDateTime_DateTime *dt)
-{
-    if (!PyDateTime_Check(dt)) {
-        PyErr_SetString(PyExc_TypeError,
-                        "fromutc: argument must be a datetime");
-        return NULL;
-    }
-    if (!HASTZINFO(dt) || dt->tzinfo != (PyObject *)self) {
-        PyErr_SetString(PyExc_ValueError, "fromutc: dt.tzinfo "
-                        "is not self");
-        return NULL;
-    }
-
-    return add_datetime_timedelta(dt, (PyDateTime_Delta *)self->offset, 1);
-}
-
-static PyObject *
-timezone_getinitargs(PyDateTime_TimeZone *self)
-{
-    if (self->name == NULL)
-        return Py_BuildValue("(O)", self->offset);
-    return Py_BuildValue("(OO)", self->offset, self->name);
-}
-
-static PyMethodDef timezone_methods[] = {
-    {"tzname", (PyCFunction)timezone_tzname, METH_O,
-     PyDoc_STR("If name is specified when timezone is created, returns the name."
-               "  Otherwise returns offset as 'UTC(+|-)HH:MM'.")},
-
-    {"utcoffset", (PyCFunction)timezone_utcoffset, METH_O,
-     PyDoc_STR("Return fixed offset.")},
-
-    {"dst", (PyCFunction)timezone_dst, METH_O,
-     PyDoc_STR("Return None.")},
-
-    {"fromutc", (PyCFunction)timezone_fromutc, METH_O,
-     PyDoc_STR("datetime in UTC -> datetime in local time.")},
-
-    {"__getinitargs__", (PyCFunction)timezone_getinitargs, METH_NOARGS,
-     PyDoc_STR("pickle support")},
-
-    {NULL, NULL}
-};
-
-static char timezone_doc[] =
-PyDoc_STR("Fixed offset from UTC implementation of tzinfo.");
-
-static PyTypeObject PyDateTime_TimeZoneType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.timezone",              /* tp_name */
-    sizeof(PyDateTime_TimeZone),      /* tp_basicsize */
-    0,                                /* tp_itemsize */
-    (destructor)timezone_dealloc,     /* tp_dealloc */
-    0,                                /* tp_print */
-    0,                                /* tp_getattr */
-    0,                                /* tp_setattr */
-    0,                                /* tp_reserved */
-    (reprfunc)timezone_repr,          /* tp_repr */
-    0,                                /* tp_as_number */
-    0,                                /* tp_as_sequence */
-    0,                                /* tp_as_mapping */
-    (hashfunc)timezone_hash,          /* tp_hash */
-    0,                                /* tp_call */
-    (reprfunc)timezone_str,           /* tp_str */
-    0,                                /* tp_getattro */
-    0,                                /* tp_setattro */
-    0,                                /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT,               /* tp_flags */
-    timezone_doc,                     /* tp_doc */
-    0,                                /* tp_traverse */
-    0,                                /* tp_clear */
-    (richcmpfunc)timezone_richcompare,/* tp_richcompare */
-    0,                                /* tp_weaklistoffset */
-    0,                                /* tp_iter */
-    0,                                /* tp_iternext */
-    timezone_methods,                 /* tp_methods */
-    0,                                /* tp_members */
-    0,                                /* tp_getset */
-    &PyDateTime_TZInfoType,           /* tp_base */
-    0,                                /* tp_dict */
-    0,                                /* tp_descr_get */
-    0,                                /* tp_descr_set */
-    0,                                /* tp_dictoffset */
-    0,                                /* tp_init */
-    0,                                /* tp_alloc */
-    timezone_new,                     /* tp_new */
-};
-
-/*
- * PyDateTime_Time implementation.
- */
-
-/* Accessor properties.
- */
-
-static PyObject *
-time_hour(PyDateTime_Time *self, void *unused)
-{
-    return PyLong_FromLong(TIME_GET_HOUR(self));
-}
-
-static PyObject *
-time_minute(PyDateTime_Time *self, void *unused)
-{
-    return PyLong_FromLong(TIME_GET_MINUTE(self));
-}
-
-/* The name time_second conflicted with some platform header file. */
-static PyObject *
-py_time_second(PyDateTime_Time *self, void *unused)
-{
-    return PyLong_FromLong(TIME_GET_SECOND(self));
-}
-
-static PyObject *
-time_microsecond(PyDateTime_Time *self, void *unused)
-{
-    return PyLong_FromLong(TIME_GET_MICROSECOND(self));
-}
-
-static PyObject *
-time_tzinfo(PyDateTime_Time *self, void *unused)
-{
-    PyObject *result = HASTZINFO(self) ? self->tzinfo : Py_None;
-    Py_INCREF(result);
-    return result;
-}
-
-static PyGetSetDef time_getset[] = {
-    {"hour",        (getter)time_hour},
-    {"minute",      (getter)time_minute},
-    {"second",      (getter)py_time_second},
-    {"microsecond", (getter)time_microsecond},
-    {"tzinfo",          (getter)time_tzinfo},
-    {NULL}
-};
-
-/*
- * Constructors.
- */
-
-static char *time_kws[] = {"hour", "minute", "second", "microsecond",
-                           "tzinfo", NULL};
-
-static PyObject *
-time_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
-    PyObject *self = NULL;
-    PyObject *state;
-    int hour = 0;
-    int minute = 0;
-    int second = 0;
-    int usecond = 0;
-    PyObject *tzinfo = Py_None;
-
-    /* Check for invocation from pickle with __getstate__ state */
-    if (PyTuple_GET_SIZE(args) >= 1 &&
-        PyTuple_GET_SIZE(args) <= 2 &&
-        PyBytes_Check(state = PyTuple_GET_ITEM(args, 0)) &&
-        PyBytes_GET_SIZE(state) == _PyDateTime_TIME_DATASIZE &&
-        ((unsigned char) (PyBytes_AS_STRING(state)[0])) < 24)
-    {
-        PyDateTime_Time *me;
-        char aware;
-
-        if (PyTuple_GET_SIZE(args) == 2) {
-            tzinfo = PyTuple_GET_ITEM(args, 1);
-            if (check_tzinfo_subclass(tzinfo) < 0) {
-                PyErr_SetString(PyExc_TypeError, "bad "
-                    "tzinfo state arg");
-                return NULL;
-            }
-        }
-        aware = (char)(tzinfo != Py_None);
-        me = (PyDateTime_Time *) (type->tp_alloc(type, aware));
-        if (me != NULL) {
-            char *pdata = PyBytes_AS_STRING(state);
-
-            memcpy(me->data, pdata, _PyDateTime_TIME_DATASIZE);
-            me->hashcode = -1;
-            me->hastzinfo = aware;
-            if (aware) {
-                Py_INCREF(tzinfo);
-                me->tzinfo = tzinfo;
-            }
-        }
-        return (PyObject *)me;
-    }
-
-    if (PyArg_ParseTupleAndKeywords(args, kw, "|iiiiO", time_kws,
-                                    &hour, &minute, &second, &usecond,
-                                    &tzinfo)) {
-        if (check_time_args(hour, minute, second, usecond) < 0)
-            return NULL;
-        if (check_tzinfo_subclass(tzinfo) < 0)
-            return NULL;
-        self = new_time_ex(hour, minute, second, usecond, tzinfo,
-                           type);
-    }
-    return self;
-}
-
-/*
- * Destructor.
- */
-
-static void
-time_dealloc(PyDateTime_Time *self)
-{
-    if (HASTZINFO(self)) {
-        Py_XDECREF(self->tzinfo);
-    }
-    Py_TYPE(self)->tp_free((PyObject *)self);
-}
-
-/*
- * Indirect access to tzinfo methods.
- */
-
-/* These are all METH_NOARGS, so don't need to check the arglist. */
-static PyObject *
-time_utcoffset(PyObject *self, PyObject *unused) {
-    return call_utcoffset(GET_TIME_TZINFO(self), Py_None);
-}
-
-static PyObject *
-time_dst(PyObject *self, PyObject *unused) {
-    return call_dst(GET_TIME_TZINFO(self), Py_None);
-}
-
-static PyObject *
-time_tzname(PyDateTime_Time *self, PyObject *unused) {
-    return call_tzname(GET_TIME_TZINFO(self), Py_None);
-}
-
-/*
- * Various ways to turn a time into a string.
- */
-
-static PyObject *
-time_repr(PyDateTime_Time *self)
-{
-    const char *type_name = Py_TYPE(self)->tp_name;
-    int h = TIME_GET_HOUR(self);
-    int m = TIME_GET_MINUTE(self);
-    int s = TIME_GET_SECOND(self);
-    int us = TIME_GET_MICROSECOND(self);
-    PyObject *result = NULL;
-
-    if (us)
-        result = PyUnicode_FromFormat("%s(%d, %d, %d, %d)",
-                                      type_name, h, m, s, us);
-    else if (s)
-        result = PyUnicode_FromFormat("%s(%d, %d, %d)",
-                                      type_name, h, m, s);
-    else
-        result = PyUnicode_FromFormat("%s(%d, %d)", type_name, h, m);
-    if (result != NULL && HASTZINFO(self))
-        result = append_keyword_tzinfo(result, self->tzinfo);
-    return result;
-}
-
-static PyObject *
-time_str(PyDateTime_Time *self)
-{
-    return PyObject_CallMethod((PyObject *)self, "isoformat", "()");
-}
-
-static PyObject *
-time_isoformat(PyDateTime_Time *self, PyObject *unused)
-{
-    char buf[100];
-    PyObject *result;
-    int us = TIME_GET_MICROSECOND(self);;
-
-    if (us)
-        result = PyUnicode_FromFormat("%02d:%02d:%02d.%06d",
-                                      TIME_GET_HOUR(self),
-                                      TIME_GET_MINUTE(self),
-                                      TIME_GET_SECOND(self),
-                                      us);
-    else
-        result = PyUnicode_FromFormat("%02d:%02d:%02d",
-                                      TIME_GET_HOUR(self),
-                                      TIME_GET_MINUTE(self),
-                                      TIME_GET_SECOND(self));
-
-    if (result == NULL || !HASTZINFO(self) || self->tzinfo == Py_None)
-        return result;
-
-    /* We need to append the UTC offset. */
-    if (format_utcoffset(buf, sizeof(buf), ":", self->tzinfo,
-                         Py_None) < 0) {
-        Py_DECREF(result);
-        return NULL;
-    }
-    PyUnicode_AppendAndDel(&result, PyUnicode_FromString(buf));
-    return result;
-}
-
-static PyObject *
-time_strftime(PyDateTime_Time *self, PyObject *args, PyObject *kw)
-{
-    PyObject *result;
-    PyObject *tuple;
-    PyObject *format;
-    static char *keywords[] = {"format", NULL};
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "U:strftime", keywords,
-                                      &format))
-        return NULL;
-
-    /* Python's strftime does insane things with the year part of the
-     * timetuple.  The year is forced to (the otherwise nonsensical)
-     * 1900 to worm around that.
-     */
-    tuple = Py_BuildValue("iiiiiiiii",
-                          1900, 1, 1, /* year, month, day */
-                  TIME_GET_HOUR(self),
-                  TIME_GET_MINUTE(self),
-                  TIME_GET_SECOND(self),
-                  0, 1, -1); /* weekday, daynum, dst */
-    if (tuple == NULL)
-        return NULL;
-    assert(PyTuple_Size(tuple) == 9);
-    result = wrap_strftime((PyObject *)self, format, tuple,
-                           Py_None);
-    Py_DECREF(tuple);
-    return result;
-}
-
-/*
- * Miscellaneous methods.
- */
-
-static PyObject *
-time_richcompare(PyObject *self, PyObject *other, int op)
-{
-    PyObject *result = NULL;
-    PyObject *offset1, *offset2;
-    int diff;
-
-    if (! PyTime_Check(other)) {
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-
-    if (GET_TIME_TZINFO(self) == GET_TIME_TZINFO(other)) {
-        diff = memcmp(((PyDateTime_Time *)self)->data,
-                      ((PyDateTime_Time *)other)->data,
-                      _PyDateTime_TIME_DATASIZE);
-        return diff_to_bool(diff, op);
-    }
-    offset1 = time_utcoffset(self, NULL);
-    if (offset1 == NULL)
-        return NULL;
-    offset2 = time_utcoffset(other, NULL);
-    if (offset2 == NULL)
-        goto done;
-    /* If they're both naive, or both aware and have the same offsets,
-     * we get off cheap.  Note that if they're both naive, offset1 ==
-     * offset2 == Py_None at this point.
-     */
-    if ((offset1 == offset2) ||
-        (PyDelta_Check(offset1) && PyDelta_Check(offset2) &&
-         delta_cmp(offset1, offset2) == 0)) {
-        diff = memcmp(((PyDateTime_Time *)self)->data,
-                      ((PyDateTime_Time *)other)->data,
-                      _PyDateTime_TIME_DATASIZE);
-        result = diff_to_bool(diff, op);
-    }
-    /* The hard case: both aware with different UTC offsets */
-    else if (offset1 != Py_None && offset2 != Py_None) {
-        int offsecs1, offsecs2;
-        assert(offset1 != offset2); /* else last "if" handled it */
-        offsecs1 = TIME_GET_HOUR(self) * 3600 +
-                   TIME_GET_MINUTE(self) * 60 +
-                   TIME_GET_SECOND(self) -
-                   GET_TD_DAYS(offset1) * 86400 -
-                   GET_TD_SECONDS(offset1);
-        offsecs2 = TIME_GET_HOUR(other) * 3600 +
-                   TIME_GET_MINUTE(other) * 60 +
-                   TIME_GET_SECOND(other) -
-                   GET_TD_DAYS(offset2) * 86400 -
-                   GET_TD_SECONDS(offset2);
-        diff = offsecs1 - offsecs2;
-        if (diff == 0)
-            diff = TIME_GET_MICROSECOND(self) -
-                   TIME_GET_MICROSECOND(other);
-        result = diff_to_bool(diff, op);
-    }
-    else {
-        PyErr_SetString(PyExc_TypeError,
-                        "can't compare offset-naive and "
-                        "offset-aware times");
-    }
- done:
-    Py_DECREF(offset1);
-    Py_XDECREF(offset2);
-    return result;
-}
-
-static long
-time_hash(PyDateTime_Time *self)
-{
-    if (self->hashcode == -1) {
-        PyObject *offset;
-
-        offset = time_utcoffset((PyObject *)self, NULL);
-
-        if (offset == NULL)
-            return -1;
-
-        /* Reduce this to a hash of another object. */
-        if (offset == Py_None)
-            self->hashcode = generic_hash(
-                (unsigned char *)self->data, _PyDateTime_TIME_DATASIZE);
-        else {
-            PyObject *temp1, *temp2;
-            int seconds, microseconds;
-            assert(HASTZINFO(self));
-            seconds = TIME_GET_HOUR(self) * 3600 +
-                      TIME_GET_MINUTE(self) * 60 +
-                      TIME_GET_SECOND(self);
-            microseconds = TIME_GET_MICROSECOND(self);
-            temp1 = new_delta(0, seconds, microseconds, 1);
-            if (temp1 == NULL) {
-                Py_DECREF(offset);
-                return -1;
-            }
-            temp2 = delta_subtract(temp1, offset);
-            Py_DECREF(temp1);
-            if (temp2 == NULL) {
-                Py_DECREF(offset);
-                return -1;
-            }
-            self->hashcode = PyObject_Hash(temp2);
-            Py_DECREF(temp2);
-        }
-        Py_DECREF(offset);
-    }
-    return self->hashcode;
-}
-
-static PyObject *
-time_replace(PyDateTime_Time *self, PyObject *args, PyObject *kw)
-{
-    PyObject *clone;
-    PyObject *tuple;
-    int hh = TIME_GET_HOUR(self);
-    int mm = TIME_GET_MINUTE(self);
-    int ss = TIME_GET_SECOND(self);
-    int us = TIME_GET_MICROSECOND(self);
-    PyObject *tzinfo = HASTZINFO(self) ? self->tzinfo : Py_None;
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "|iiiiO:replace",
-                                      time_kws,
-                                      &hh, &mm, &ss, &us, &tzinfo))
-        return NULL;
-    tuple = Py_BuildValue("iiiiO", hh, mm, ss, us, tzinfo);
-    if (tuple == NULL)
-        return NULL;
-    clone = time_new(Py_TYPE(self), tuple, NULL);
-    Py_DECREF(tuple);
-    return clone;
-}
-
-static int
-time_bool(PyObject *self)
-{
-    PyObject *offset, *tzinfo;
-    int offsecs = 0;
-
-    if (TIME_GET_SECOND(self) || TIME_GET_MICROSECOND(self)) {
-        /* Since utcoffset is in whole minutes, nothing can
-         * alter the conclusion that this is nonzero.
-         */
-        return 1;
-    }
-    tzinfo = GET_TIME_TZINFO(self);
-    if (tzinfo != Py_None) {
-        offset = call_utcoffset(tzinfo, Py_None);
-        if (offset == NULL)
-            return -1;
-        offsecs = GET_TD_DAYS(offset)*86400 + GET_TD_SECONDS(offset);
-        Py_DECREF(offset);
-    }
-    return (TIME_GET_MINUTE(self)*60 - offsecs + TIME_GET_HOUR(self)*3600) != 0;
-}
-
-/* Pickle support, a simple use of __reduce__. */
-
-/* Let basestate be the non-tzinfo data string.
- * If tzinfo is None, this returns (basestate,), else (basestate, tzinfo).
- * So it's a tuple in any (non-error) case.
- * __getstate__ isn't exposed.
- */
-static PyObject *
-time_getstate(PyDateTime_Time *self)
-{
-    PyObject *basestate;
-    PyObject *result = NULL;
-
-    basestate =  PyBytes_FromStringAndSize((char *)self->data,
-                                            _PyDateTime_TIME_DATASIZE);
-    if (basestate != NULL) {
-        if (! HASTZINFO(self) || self->tzinfo == Py_None)
-            result = PyTuple_Pack(1, basestate);
-        else
-            result = PyTuple_Pack(2, basestate, self->tzinfo);
-        Py_DECREF(basestate);
-    }
-    return result;
-}
-
-static PyObject *
-time_reduce(PyDateTime_Time *self, PyObject *arg)
-{
-    return Py_BuildValue("(ON)", Py_TYPE(self), time_getstate(self));
-}
-
-static PyMethodDef time_methods[] = {
-
-    {"isoformat",   (PyCFunction)time_isoformat,        METH_NOARGS,
-     PyDoc_STR("Return string in ISO 8601 format, HH:MM:SS[.mmmmmm]"
-               "[+HH:MM].")},
-
-    {"strftime",        (PyCFunction)time_strftime,     METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("format -> strftime() style string.")},
-
-    {"__format__",      (PyCFunction)date_format,       METH_VARARGS,
-     PyDoc_STR("Formats self with strftime.")},
-
-    {"utcoffset",       (PyCFunction)time_utcoffset,    METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.utcoffset(self).")},
-
-    {"tzname",          (PyCFunction)time_tzname,       METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.tzname(self).")},
-
-    {"dst",             (PyCFunction)time_dst,          METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.dst(self).")},
-
-    {"replace",     (PyCFunction)time_replace,          METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("Return time with new specified fields.")},
-
-    {"__reduce__", (PyCFunction)time_reduce,        METH_NOARGS,
-     PyDoc_STR("__reduce__() -> (cls, state)")},
-
-    {NULL,      NULL}
-};
-
-static char time_doc[] =
-PyDoc_STR("time([hour[, minute[, second[, microsecond[, tzinfo]]]]]) --> a time object\n\
-\n\
-All arguments are optional. tzinfo may be None, or an instance of\n\
-a tzinfo subclass. The remaining arguments may be ints or longs.\n");
-
-static PyNumberMethods time_as_number = {
-    0,                                          /* nb_add */
-    0,                                          /* nb_subtract */
-    0,                                          /* nb_multiply */
-    0,                                          /* nb_remainder */
-    0,                                          /* nb_divmod */
-    0,                                          /* nb_power */
-    0,                                          /* nb_negative */
-    0,                                          /* nb_positive */
-    0,                                          /* nb_absolute */
-    (inquiry)time_bool,                         /* nb_bool */
-};
-
-static PyTypeObject PyDateTime_TimeType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.time",                            /* tp_name */
-    sizeof(PyDateTime_Time),                    /* tp_basicsize */
-    0,                                          /* tp_itemsize */
-    (destructor)time_dealloc,                   /* tp_dealloc */
-    0,                                          /* tp_print */
-    0,                                          /* tp_getattr */
-    0,                                          /* tp_setattr */
-    0,                                          /* tp_reserved */
-    (reprfunc)time_repr,                        /* tp_repr */
-    &time_as_number,                            /* tp_as_number */
-    0,                                          /* tp_as_sequence */
-    0,                                          /* tp_as_mapping */
-    (hashfunc)time_hash,                        /* tp_hash */
-    0,                                          /* tp_call */
-    (reprfunc)time_str,                         /* tp_str */
-    PyObject_GenericGetAttr,                    /* tp_getattro */
-    0,                                          /* tp_setattro */
-    0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
-    time_doc,                                   /* tp_doc */
-    0,                                          /* tp_traverse */
-    0,                                          /* tp_clear */
-    time_richcompare,                           /* tp_richcompare */
-    0,                                          /* tp_weaklistoffset */
-    0,                                          /* tp_iter */
-    0,                                          /* tp_iternext */
-    time_methods,                               /* tp_methods */
-    0,                                          /* tp_members */
-    time_getset,                                /* tp_getset */
-    0,                                          /* tp_base */
-    0,                                          /* tp_dict */
-    0,                                          /* tp_descr_get */
-    0,                                          /* tp_descr_set */
-    0,                                          /* tp_dictoffset */
-    0,                                          /* tp_init */
-    time_alloc,                                 /* tp_alloc */
-    time_new,                                   /* tp_new */
-    0,                                          /* tp_free */
-};
-
-/*
- * PyDateTime_DateTime implementation.
- */
-
-/* Accessor properties.  Properties for day, month, and year are inherited
- * from date.
- */
-
-static PyObject *
-datetime_hour(PyDateTime_DateTime *self, void *unused)
-{
-    return PyLong_FromLong(DATE_GET_HOUR(self));
-}
-
-static PyObject *
-datetime_minute(PyDateTime_DateTime *self, void *unused)
-{
-    return PyLong_FromLong(DATE_GET_MINUTE(self));
-}
-
-static PyObject *
-datetime_second(PyDateTime_DateTime *self, void *unused)
-{
-    return PyLong_FromLong(DATE_GET_SECOND(self));
-}
-
-static PyObject *
-datetime_microsecond(PyDateTime_DateTime *self, void *unused)
-{
-    return PyLong_FromLong(DATE_GET_MICROSECOND(self));
-}
-
-static PyObject *
-datetime_tzinfo(PyDateTime_DateTime *self, void *unused)
-{
-    PyObject *result = HASTZINFO(self) ? self->tzinfo : Py_None;
-    Py_INCREF(result);
-    return result;
-}
-
-static PyGetSetDef datetime_getset[] = {
-    {"hour",        (getter)datetime_hour},
-    {"minute",      (getter)datetime_minute},
-    {"second",      (getter)datetime_second},
-    {"microsecond", (getter)datetime_microsecond},
-    {"tzinfo",          (getter)datetime_tzinfo},
-    {NULL}
-};
-
-/*
- * Constructors.
- */
-
-static char *datetime_kws[] = {
-    "year", "month", "day", "hour", "minute", "second",
-    "microsecond", "tzinfo", NULL
-};
-
-static PyObject *
-datetime_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
-    PyObject *self = NULL;
-    PyObject *state;
-    int year;
-    int month;
-    int day;
-    int hour = 0;
-    int minute = 0;
-    int second = 0;
-    int usecond = 0;
-    PyObject *tzinfo = Py_None;
-
-    /* Check for invocation from pickle with __getstate__ state */
-    if (PyTuple_GET_SIZE(args) >= 1 &&
-        PyTuple_GET_SIZE(args) <= 2 &&
-        PyBytes_Check(state = PyTuple_GET_ITEM(args, 0)) &&
-        PyBytes_GET_SIZE(state) == _PyDateTime_DATETIME_DATASIZE &&
-        MONTH_IS_SANE(PyBytes_AS_STRING(state)[2]))
-    {
-        PyDateTime_DateTime *me;
-        char aware;
-
-        if (PyTuple_GET_SIZE(args) == 2) {
-            tzinfo = PyTuple_GET_ITEM(args, 1);
-            if (check_tzinfo_subclass(tzinfo) < 0) {
-                PyErr_SetString(PyExc_TypeError, "bad "
-                    "tzinfo state arg");
-                return NULL;
-            }
-        }
-        aware = (char)(tzinfo != Py_None);
-        me = (PyDateTime_DateTime *) (type->tp_alloc(type , aware));
-        if (me != NULL) {
-            char *pdata = PyBytes_AS_STRING(state);
-
-            memcpy(me->data, pdata, _PyDateTime_DATETIME_DATASIZE);
-            me->hashcode = -1;
-            me->hastzinfo = aware;
-            if (aware) {
-                Py_INCREF(tzinfo);
-                me->tzinfo = tzinfo;
-            }
-        }
-        return (PyObject *)me;
-    }
-
-    if (PyArg_ParseTupleAndKeywords(args, kw, "iii|iiiiO", datetime_kws,
-                                    &year, &month, &day, &hour, &minute,
-                                    &second, &usecond, &tzinfo)) {
-        if (check_date_args(year, month, day) < 0)
-            return NULL;
-        if (check_time_args(hour, minute, second, usecond) < 0)
-            return NULL;
-        if (check_tzinfo_subclass(tzinfo) < 0)
-            return NULL;
-        self = new_datetime_ex(year, month, day,
-                                hour, minute, second, usecond,
-                                tzinfo, type);
-    }
-    return self;
-}
-
-/* TM_FUNC is the shared type of localtime() and gmtime(). */
-typedef struct tm *(*TM_FUNC)(const time_t *timer);
-
-/* Internal helper.
- * Build datetime from a time_t and a distinct count of microseconds.
- * Pass localtime or gmtime for f, to control the interpretation of timet.
- */
-static PyObject *
-datetime_from_timet_and_us(PyObject *cls, TM_FUNC f, time_t timet, int us,
-                           PyObject *tzinfo)
-{
-    struct tm *tm;
-    PyObject *result = NULL;
-
-    tm = f(&timet);
-    if (tm) {
-        /* The platform localtime/gmtime may insert leap seconds,
-         * indicated by tm->tm_sec > 59.  We don't care about them,
-         * except to the extent that passing them on to the datetime
-         * constructor would raise ValueError for a reason that
-         * made no sense to the user.
-         */
-        if (tm->tm_sec > 59)
-            tm->tm_sec = 59;
-        result = PyObject_CallFunction(cls, "iiiiiiiO",
-                                       tm->tm_year + 1900,
-                                       tm->tm_mon + 1,
-                                       tm->tm_mday,
-                                       tm->tm_hour,
-                                       tm->tm_min,
-                                       tm->tm_sec,
-                                       us,
-                                       tzinfo);
-    }
-    else
-        PyErr_SetString(PyExc_ValueError,
-                        "timestamp out of range for "
-                        "platform localtime()/gmtime() function");
-    return result;
-}
-
-/* Internal helper.
- * Build datetime from a Python timestamp.  Pass localtime or gmtime for f,
- * to control the interpretation of the timestamp.  Since a double doesn't
- * have enough bits to cover a datetime's full range of precision, it's
- * better to call datetime_from_timet_and_us provided you have a way
- * to get that much precision (e.g., C time() isn't good enough).
- */
-static PyObject *
-datetime_from_timestamp(PyObject *cls, TM_FUNC f, double timestamp,
-                        PyObject *tzinfo)
-{
-    time_t timet;
-    double fraction;
-    int us;
-
-    timet = _PyTime_DoubleToTimet(timestamp);
-    if (timet == (time_t)-1 && PyErr_Occurred())
-        return NULL;
-    fraction = timestamp - (double)timet;
-    us = (int)round_to_long(fraction * 1e6);
-    if (us < 0) {
-        /* Truncation towards zero is not what we wanted
-           for negative numbers (Python's mod semantics) */
-        timet -= 1;
-        us += 1000000;
-    }
-    /* If timestamp is less than one microsecond smaller than a
-     * full second, round up. Otherwise, ValueErrors are raised
-     * for some floats. */
-    if (us == 1000000) {
-        timet += 1;
-        us = 0;
-    }
-    return datetime_from_timet_and_us(cls, f, timet, us, tzinfo);
-}
-
-/* Internal helper.
- * Build most accurate possible datetime for current time.  Pass localtime or
- * gmtime for f as appropriate.
- */
-static PyObject *
-datetime_best_possible(PyObject *cls, TM_FUNC f, PyObject *tzinfo)
-{
-#ifdef HAVE_GETTIMEOFDAY
-    struct timeval t;
-
-#ifdef GETTIMEOFDAY_NO_TZ
-    gettimeofday(&t);
-#else
-    gettimeofday(&t, (struct timezone *)NULL);
-#endif
-    return datetime_from_timet_and_us(cls, f, t.tv_sec, (int)t.tv_usec,
-                                      tzinfo);
-
-#else   /* ! HAVE_GETTIMEOFDAY */
-    /* No flavor of gettimeofday exists on this platform.  Python's
-     * time.time() does a lot of other platform tricks to get the
-     * best time it can on the platform, and we're not going to do
-     * better than that (if we could, the better code would belong
-     * in time.time()!)  We're limited by the precision of a double,
-     * though.
-     */
-    PyObject *time;
-    double dtime;
-
-    time = time_time();
-    if (time == NULL)
-        return NULL;
-    dtime = PyFloat_AsDouble(time);
-    Py_DECREF(time);
-    if (dtime == -1.0 && PyErr_Occurred())
-        return NULL;
-    return datetime_from_timestamp(cls, f, dtime, tzinfo);
-#endif  /* ! HAVE_GETTIMEOFDAY */
-}
-
-/* Return best possible local time -- this isn't constrained by the
- * precision of a timestamp.
- */
-static PyObject *
-datetime_now(PyObject *cls, PyObject *args, PyObject *kw)
-{
-    PyObject *self;
-    PyObject *tzinfo = Py_None;
-    static char *keywords[] = {"tz", NULL};
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "|O:now", keywords,
-                                      &tzinfo))
-        return NULL;
-    if (check_tzinfo_subclass(tzinfo) < 0)
-        return NULL;
-
-    self = datetime_best_possible(cls,
-                                  tzinfo == Py_None ? localtime : gmtime,
-                                  tzinfo);
-    if (self != NULL && tzinfo != Py_None) {
-        /* Convert UTC to tzinfo's zone. */
-        PyObject *temp = self;
-        self = PyObject_CallMethod(tzinfo, "fromutc", "O", self);
-        Py_DECREF(temp);
-    }
-    return self;
-}
-
-/* Return best possible UTC time -- this isn't constrained by the
- * precision of a timestamp.
- */
-static PyObject *
-datetime_utcnow(PyObject *cls, PyObject *dummy)
-{
-    return datetime_best_possible(cls, gmtime, Py_None);
-}
-
-/* Return new local datetime from timestamp (Python timestamp -- a double). */
-static PyObject *
-datetime_fromtimestamp(PyObject *cls, PyObject *args, PyObject *kw)
-{
-    PyObject *self;
-    double timestamp;
-    PyObject *tzinfo = Py_None;
-    static char *keywords[] = {"timestamp", "tz", NULL};
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "d|O:fromtimestamp",
-                                      keywords, &timestamp, &tzinfo))
-        return NULL;
-    if (check_tzinfo_subclass(tzinfo) < 0)
-        return NULL;
-
-    self = datetime_from_timestamp(cls,
-                                   tzinfo == Py_None ? localtime : gmtime,
-                                   timestamp,
-                                   tzinfo);
-    if (self != NULL && tzinfo != Py_None) {
-        /* Convert UTC to tzinfo's zone. */
-        PyObject *temp = self;
-        self = PyObject_CallMethod(tzinfo, "fromutc", "O", self);
-        Py_DECREF(temp);
-    }
-    return self;
-}
-
-/* Return new UTC datetime from timestamp (Python timestamp -- a double). */
-static PyObject *
-datetime_utcfromtimestamp(PyObject *cls, PyObject *args)
-{
-    double timestamp;
-    PyObject *result = NULL;
-
-    if (PyArg_ParseTuple(args, "d:utcfromtimestamp", &timestamp))
-        result = datetime_from_timestamp(cls, gmtime, timestamp,
-                                         Py_None);
-    return result;
-}
-
-/* Return new datetime from _strptime.strptime_datetime(). */
-static PyObject *
-datetime_strptime(PyObject *cls, PyObject *args)
-{
-    static PyObject *module = NULL;
-    const Py_UNICODE *string, *format;
-
-    if (!PyArg_ParseTuple(args, "uu:strptime", &string, &format))
-        return NULL;
-
-    if (module == NULL) {
-        module = PyImport_ImportModuleNoBlock("_strptime");
-        if (module == NULL)
-            return NULL;
-    }
-    return PyObject_CallMethod(module, "_strptime_datetime", "Ouu",
-                               cls, string, format);
-}
-
-/* Return new datetime from date/datetime and time arguments. */
-static PyObject *
-datetime_combine(PyObject *cls, PyObject *args, PyObject *kw)
-{
-    static char *keywords[] = {"date", "time", NULL};
-    PyObject *date;
-    PyObject *time;
-    PyObject *result = NULL;
-
-    if (PyArg_ParseTupleAndKeywords(args, kw, "O!O!:combine", keywords,
-                                    &PyDateTime_DateType, &date,
-                                    &PyDateTime_TimeType, &time)) {
-        PyObject *tzinfo = Py_None;
-
-        if (HASTZINFO(time))
-            tzinfo = ((PyDateTime_Time *)time)->tzinfo;
-        result = PyObject_CallFunction(cls, "iiiiiiiO",
-                                        GET_YEAR(date),
-                                        GET_MONTH(date),
-                                        GET_DAY(date),
-                                        TIME_GET_HOUR(time),
-                                        TIME_GET_MINUTE(time),
-                                        TIME_GET_SECOND(time),
-                                        TIME_GET_MICROSECOND(time),
-                                        tzinfo);
-    }
-    return result;
-}
-
-/*
- * Destructor.
- */
-
-static void
-datetime_dealloc(PyDateTime_DateTime *self)
-{
-    if (HASTZINFO(self)) {
-        Py_XDECREF(self->tzinfo);
-    }
-    Py_TYPE(self)->tp_free((PyObject *)self);
-}
-
-/*
- * Indirect access to tzinfo methods.
- */
-
-/* These are all METH_NOARGS, so don't need to check the arglist. */
-static PyObject *
-datetime_utcoffset(PyObject *self, PyObject *unused) {
-    return call_utcoffset(GET_DT_TZINFO(self), self);
-}
-
-static PyObject *
-datetime_dst(PyObject *self, PyObject *unused) {
-    return call_dst(GET_DT_TZINFO(self), self);
-}
-
-static PyObject *
-datetime_tzname(PyObject *self, PyObject *unused) {
-    return call_tzname(GET_DT_TZINFO(self), self);
-}
-
-/*
- * datetime arithmetic.
- */
-
-/* factor must be 1 (to add) or -1 (to subtract).  The result inherits
- * the tzinfo state of date.
- */
-static PyObject *
-add_datetime_timedelta(PyDateTime_DateTime *date, PyDateTime_Delta *delta,
-                       int factor)
-{
-    /* Note that the C-level additions can't overflow, because of
-     * invariant bounds on the member values.
-     */
-    int year = GET_YEAR(date);
-    int month = GET_MONTH(date);
-    int day = GET_DAY(date) + GET_TD_DAYS(delta) * factor;
-    int hour = DATE_GET_HOUR(date);
-    int minute = DATE_GET_MINUTE(date);
-    int second = DATE_GET_SECOND(date) + GET_TD_SECONDS(delta) * factor;
-    int microsecond = DATE_GET_MICROSECOND(date) +
-                      GET_TD_MICROSECONDS(delta) * factor;
-
-    assert(factor == 1 || factor == -1);
-    if (normalize_datetime(&year, &month, &day,
-                           &hour, &minute, &second, &microsecond) < 0)
-        return NULL;
-    else
-        return new_datetime(year, month, day,
-                            hour, minute, second, microsecond,
-                            HASTZINFO(date) ? date->tzinfo : Py_None);
-}
-
-static PyObject *
-datetime_add(PyObject *left, PyObject *right)
-{
-    if (PyDateTime_Check(left)) {
-        /* datetime + ??? */
-        if (PyDelta_Check(right))
-            /* datetime + delta */
-            return add_datetime_timedelta(
-                            (PyDateTime_DateTime *)left,
-                            (PyDateTime_Delta *)right,
-                            1);
-    }
-    else if (PyDelta_Check(left)) {
-        /* delta + datetime */
-        return add_datetime_timedelta((PyDateTime_DateTime *) right,
-                                      (PyDateTime_Delta *) left,
-                                      1);
-    }
-    Py_INCREF(Py_NotImplemented);
-    return Py_NotImplemented;
-}
-
-static PyObject *
-datetime_subtract(PyObject *left, PyObject *right)
-{
-    PyObject *result = Py_NotImplemented;
-
-    if (PyDateTime_Check(left)) {
-        /* datetime - ??? */
-        if (PyDateTime_Check(right)) {
-            /* datetime - datetime */
-            PyObject *offset1, *offset2, *offdiff = NULL;
-            int delta_d, delta_s, delta_us;
-
-            if (GET_DT_TZINFO(left) == GET_DT_TZINFO(right)) {
-                offset2 = offset1 = Py_None;
-                Py_INCREF(offset1);
-                Py_INCREF(offset2);
-            }
-            else {
-                offset1 = datetime_utcoffset(left, NULL);
-                if (offset1 == NULL)
-                    return NULL;
-                offset2 = datetime_utcoffset(right, NULL);
-                if (offset2 == NULL) {
-                    Py_DECREF(offset1);
-                    return NULL;
-                }
-                if ((offset1 != Py_None) != (offset2 != Py_None)) {
-                    PyErr_SetString(PyExc_TypeError,
-                                    "can't subtract offset-naive and "
-                                    "offset-aware datetimes");
-                    Py_DECREF(offset1);
-                    Py_DECREF(offset2);
-                    return NULL;
-                }
-            }
-            if ((offset1 != offset2) &&
-                delta_cmp(offset1, offset2) != 0) {
-                offdiff = delta_subtract(offset1, offset2);
-                if (offdiff == NULL) {
-                    Py_DECREF(offset1);
-                    Py_DECREF(offset2);
-                    return NULL;
-                }
-            }
-            Py_DECREF(offset1);
-            Py_DECREF(offset2);
-            delta_d = ymd_to_ord(GET_YEAR(left),
-                                 GET_MONTH(left),
-                                 GET_DAY(left)) -
-                      ymd_to_ord(GET_YEAR(right),
-                                 GET_MONTH(right),
-                                 GET_DAY(right));
-            /* These can't overflow, since the values are
-             * normalized.  At most this gives the number of
-             * seconds in one day.
-             */
-            delta_s = (DATE_GET_HOUR(left) -
-                       DATE_GET_HOUR(right)) * 3600 +
-                      (DATE_GET_MINUTE(left) -
-                       DATE_GET_MINUTE(right)) * 60 +
-                      (DATE_GET_SECOND(left) -
-                       DATE_GET_SECOND(right));
-            delta_us = DATE_GET_MICROSECOND(left) -
-                       DATE_GET_MICROSECOND(right);
-            result = new_delta(delta_d, delta_s, delta_us, 1);
-            if (offdiff != NULL) {
-                PyObject *temp = result;
-                result = delta_subtract(result, offdiff);
-                Py_DECREF(temp);
-                Py_DECREF(offdiff);
-            }
-        }
-        else if (PyDelta_Check(right)) {
-            /* datetime - delta */
-            result = add_datetime_timedelta(
-                            (PyDateTime_DateTime *)left,
-                            (PyDateTime_Delta *)right,
-                            -1);
-        }
-    }
-
-    if (result == Py_NotImplemented)
-        Py_INCREF(result);
-    return result;
-}
-
-/* Various ways to turn a datetime into a string. */
-
-static PyObject *
-datetime_repr(PyDateTime_DateTime *self)
-{
-    const char *type_name = Py_TYPE(self)->tp_name;
-    PyObject *baserepr;
-
-    if (DATE_GET_MICROSECOND(self)) {
-        baserepr = PyUnicode_FromFormat(
-                      "%s(%d, %d, %d, %d, %d, %d, %d)",
-                      type_name,
-                      GET_YEAR(self), GET_MONTH(self), GET_DAY(self),
-                      DATE_GET_HOUR(self), DATE_GET_MINUTE(self),
-                      DATE_GET_SECOND(self),
-                      DATE_GET_MICROSECOND(self));
-    }
-    else if (DATE_GET_SECOND(self)) {
-        baserepr = PyUnicode_FromFormat(
-                      "%s(%d, %d, %d, %d, %d, %d)",
-                      type_name,
-                      GET_YEAR(self), GET_MONTH(self), GET_DAY(self),
-                      DATE_GET_HOUR(self), DATE_GET_MINUTE(self),
-                      DATE_GET_SECOND(self));
-    }
-    else {
-        baserepr = PyUnicode_FromFormat(
-                      "%s(%d, %d, %d, %d, %d)",
-                      type_name,
-                      GET_YEAR(self), GET_MONTH(self), GET_DAY(self),
-                      DATE_GET_HOUR(self), DATE_GET_MINUTE(self));
-    }
-    if (baserepr == NULL || ! HASTZINFO(self))
-        return baserepr;
-    return append_keyword_tzinfo(baserepr, self->tzinfo);
-}
-
-static PyObject *
-datetime_str(PyDateTime_DateTime *self)
-{
-    return PyObject_CallMethod((PyObject *)self, "isoformat", "(s)", " ");
-}
-
-static PyObject *
-datetime_isoformat(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
-{
-    int sep = 'T';
-    static char *keywords[] = {"sep", NULL};
-    char buffer[100];
-    PyObject *result;
-    int us = DATE_GET_MICROSECOND(self);
-
-    if (!PyArg_ParseTupleAndKeywords(args, kw, "|C:isoformat", keywords, &sep))
-        return NULL;
-    if (us)
-        result = PyUnicode_FromFormat("%04d-%02d-%02d%c%02d:%02d:%02d.%06d",
-                                      GET_YEAR(self), GET_MONTH(self),
-                                      GET_DAY(self), (int)sep,
-                                      DATE_GET_HOUR(self), DATE_GET_MINUTE(self),
-                                      DATE_GET_SECOND(self), us);
-    else
-        result = PyUnicode_FromFormat("%04d-%02d-%02d%c%02d:%02d:%02d",
-                                      GET_YEAR(self), GET_MONTH(self),
-                                      GET_DAY(self), (int)sep,
-                                      DATE_GET_HOUR(self), DATE_GET_MINUTE(self),
-                                      DATE_GET_SECOND(self));
-
-    if (!result || !HASTZINFO(self))
-        return result;
-
-    /* We need to append the UTC offset. */
-    if (format_utcoffset(buffer, sizeof(buffer), ":", self->tzinfo,
-                         (PyObject *)self) < 0) {
-        Py_DECREF(result);
-        return NULL;
-    }
-    PyUnicode_AppendAndDel(&result, PyUnicode_FromString(buffer));
-    return result;
-}
-
-static PyObject *
-datetime_ctime(PyDateTime_DateTime *self)
-{
-    return format_ctime((PyDateTime_Date *)self,
-                        DATE_GET_HOUR(self),
-                        DATE_GET_MINUTE(self),
-                        DATE_GET_SECOND(self));
-}
-
-/* Miscellaneous methods. */
-
-static PyObject *
-datetime_richcompare(PyObject *self, PyObject *other, int op)
-{
-    PyObject *result = NULL;
-    PyObject *offset1, *offset2;
-    int diff;
-
-    if (! PyDateTime_Check(other)) {
-        if (PyDate_Check(other)) {
-            /* Prevent invocation of date_richcompare.  We want to
-               return NotImplemented here to give the other object
-               a chance.  But since DateTime is a subclass of
-               Date, if the other object is a Date, it would
-               compute an ordering based on the date part alone,
-               and we don't want that.  So force unequal or
-               uncomparable here in that case. */
-            if (op == Py_EQ)
-                Py_RETURN_FALSE;
-            if (op == Py_NE)
-                Py_RETURN_TRUE;
-            return cmperror(self, other);
-        }
-        Py_INCREF(Py_NotImplemented);
-        return Py_NotImplemented;
-    }
-
-    if (GET_DT_TZINFO(self) == GET_DT_TZINFO(other)) {
-        diff = memcmp(((PyDateTime_DateTime *)self)->data,
-                      ((PyDateTime_DateTime *)other)->data,
-                      _PyDateTime_DATETIME_DATASIZE);
-        return diff_to_bool(diff, op);
-    }
-    offset1 = datetime_utcoffset(self, NULL);
-    if (offset1 == NULL)
-        return NULL;
-    offset2 = datetime_utcoffset(other, NULL);
-    if (offset2 == NULL)
-        goto done;
-    /* If they're both naive, or both aware and have the same offsets,
-     * we get off cheap.  Note that if they're both naive, offset1 ==
-     * offset2 == Py_None at this point.
-     */
-    if ((offset1 == offset2) ||
-        (PyDelta_Check(offset1) && PyDelta_Check(offset2) &&
-         delta_cmp(offset1, offset2) == 0)) {
-        diff = memcmp(((PyDateTime_DateTime *)self)->data,
-                      ((PyDateTime_DateTime *)other)->data,
-                      _PyDateTime_DATETIME_DATASIZE);
-        result = diff_to_bool(diff, op);
-    }
-    else if (offset1 != Py_None && offset2 != Py_None) {
-        PyDateTime_Delta *delta;
-
-        assert(offset1 != offset2); /* else last "if" handled it */
-        delta = (PyDateTime_Delta *)datetime_subtract((PyObject *)self,
-                                                       other);
-        if (delta == NULL)
-            goto done;
-        diff = GET_TD_DAYS(delta);
-        if (diff == 0)
-            diff = GET_TD_SECONDS(delta) |
-                   GET_TD_MICROSECONDS(delta);
-        Py_DECREF(delta);
-        result = diff_to_bool(diff, op);
-    }
-    else {
-        PyErr_SetString(PyExc_TypeError,
-                        "can't compare offset-naive and "
-                        "offset-aware datetimes");
-    }
- done:
-    Py_DECREF(offset1);
-    Py_XDECREF(offset2);
-    return result;
-}
-
-static long
-datetime_hash(PyDateTime_DateTime *self)
-{
-    if (self->hashcode == -1) {
-        PyObject *offset;
-
-        offset = datetime_utcoffset((PyObject *)self, NULL);
-
-        if (offset == NULL)
-            return -1;
-
-        /* Reduce this to a hash of another object. */
-        if (offset == Py_None)
-            self->hashcode = generic_hash(
-                (unsigned char *)self->data, _PyDateTime_DATETIME_DATASIZE);
-        else {
-            PyObject *temp1, *temp2;
-            int days, seconds;
-
-            assert(HASTZINFO(self));
-            days = ymd_to_ord(GET_YEAR(self),
-                              GET_MONTH(self),
-                              GET_DAY(self));
-            seconds = DATE_GET_HOUR(self) * 3600 +
-                      DATE_GET_MINUTE(self) * 60 +
-                      DATE_GET_SECOND(self);
-            temp1 = new_delta(days, seconds,
-                              DATE_GET_MICROSECOND(self),
-                              1);
-            if (temp1 == NULL) {
-                Py_DECREF(offset);
-                return -1;
-            }
-            temp2 = delta_subtract(temp1, offset);
-            Py_DECREF(temp1);
-            if (temp2 == NULL) {
-                Py_DECREF(offset);
-                return -1;
-            }
-            self->hashcode = PyObject_Hash(temp2);
-            Py_DECREF(temp2);
-        }
-        Py_DECREF(offset);
-    }
-    return self->hashcode;
-}
-
-static PyObject *
-datetime_replace(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
-{
-    PyObject *clone;
-    PyObject *tuple;
-    int y = GET_YEAR(self);
-    int m = GET_MONTH(self);
-    int d = GET_DAY(self);
-    int hh = DATE_GET_HOUR(self);
-    int mm = DATE_GET_MINUTE(self);
-    int ss = DATE_GET_SECOND(self);
-    int us = DATE_GET_MICROSECOND(self);
-    PyObject *tzinfo = HASTZINFO(self) ? self->tzinfo : Py_None;
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "|iiiiiiiO:replace",
-                                      datetime_kws,
-                                      &y, &m, &d, &hh, &mm, &ss, &us,
-                                      &tzinfo))
-        return NULL;
-    tuple = Py_BuildValue("iiiiiiiO", y, m, d, hh, mm, ss, us, tzinfo);
-    if (tuple == NULL)
-        return NULL;
-    clone = datetime_new(Py_TYPE(self), tuple, NULL);
-    Py_DECREF(tuple);
-    return clone;
-}
-
-static PyObject *
-datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
-{
-    PyObject *result;
-    PyObject *offset;
-    PyObject *temp;
-    PyObject *tzinfo;
-    static char *keywords[] = {"tz", NULL};
-
-    if (! PyArg_ParseTupleAndKeywords(args, kw, "O!:astimezone", keywords,
-                                      &PyDateTime_TZInfoType, &tzinfo))
-        return NULL;
-
-    if (!HASTZINFO(self) || self->tzinfo == Py_None)
-        goto NeedAware;
-
-    /* Conversion to self's own time zone is a NOP. */
-    if (self->tzinfo == tzinfo) {
-        Py_INCREF(self);
-        return (PyObject *)self;
-    }
-
-    /* Convert self to UTC. */
-    offset = datetime_utcoffset((PyObject *)self, NULL);
-    if (offset == NULL)
-        return NULL;
-    if (offset == Py_None) {
-        Py_DECREF(offset);
-      NeedAware:
-        PyErr_SetString(PyExc_ValueError, "astimezone() cannot be applied to "
-                        "a naive datetime");
-        return NULL;
-    }
-
-    /* result = self - offset */
-    result = add_datetime_timedelta(self,
-                (PyDateTime_Delta *)offset, -1);
-    Py_DECREF(offset);
-    if (result == NULL)
-        return NULL;
-
-    /* Attach new tzinfo and let fromutc() do the rest. */
-    temp = ((PyDateTime_DateTime *)result)->tzinfo;
-    ((PyDateTime_DateTime *)result)->tzinfo = tzinfo;
-    Py_INCREF(tzinfo);
-    Py_DECREF(temp);
-
-    temp = result;
-    result = PyObject_CallMethod(tzinfo, "fromutc", "O", temp);
-    Py_DECREF(temp);
-
-    return result;
-}
-
-static PyObject *
-datetime_timetuple(PyDateTime_DateTime *self)
-{
-    int dstflag = -1;
-
-    if (HASTZINFO(self) && self->tzinfo != Py_None) {
-        PyObject * dst;
-
-        dst = call_dst(self->tzinfo, (PyObject *)self);
-        if (dst == NULL)
-            return NULL;
-
-        if (dst != Py_None)
-            dstflag = delta_bool((PyDateTime_Delta *)dst);
-        Py_DECREF(dst);
-    }
-    return build_struct_time(GET_YEAR(self),
-                             GET_MONTH(self),
-                             GET_DAY(self),
-                             DATE_GET_HOUR(self),
-                             DATE_GET_MINUTE(self),
-                             DATE_GET_SECOND(self),
-                             dstflag);
-}
-
-static PyObject *
-datetime_getdate(PyDateTime_DateTime *self)
-{
-    return new_date(GET_YEAR(self),
-                    GET_MONTH(self),
-                    GET_DAY(self));
-}
-
-static PyObject *
-datetime_gettime(PyDateTime_DateTime *self)
-{
-    return new_time(DATE_GET_HOUR(self),
-                    DATE_GET_MINUTE(self),
-                    DATE_GET_SECOND(self),
-                    DATE_GET_MICROSECOND(self),
-                    Py_None);
-}
-
-static PyObject *
-datetime_gettimetz(PyDateTime_DateTime *self)
-{
-    return new_time(DATE_GET_HOUR(self),
-                    DATE_GET_MINUTE(self),
-                    DATE_GET_SECOND(self),
-                    DATE_GET_MICROSECOND(self),
-                    GET_DT_TZINFO(self));
-}
-
-static PyObject *
-datetime_utctimetuple(PyDateTime_DateTime *self)
-{
-    int y, m, d, hh, mm, ss;
-    PyObject *tzinfo;
-    PyDateTime_DateTime *utcself;
-
-    tzinfo = GET_DT_TZINFO(self);
-    if (tzinfo == Py_None) {
-        utcself = self;
-        Py_INCREF(utcself);
-    }
-    else {
-        PyObject *offset;
-        offset = call_utcoffset(tzinfo, (PyObject *)self);
-        if (offset == NULL)
-            return NULL;
-        if (offset == Py_None) {
-            Py_DECREF(offset);
-            utcself = self;
-            Py_INCREF(utcself);
-        }
-        else {
-            utcself = (PyDateTime_DateTime *)add_datetime_timedelta(self,
-                                                (PyDateTime_Delta *)offset, -1);
-            Py_DECREF(offset);
-            if (utcself == NULL)
-                return NULL;
-        }
-    }
-    y = GET_YEAR(utcself);
-    m = GET_MONTH(utcself);
-    d = GET_DAY(utcself);
-    hh = DATE_GET_HOUR(utcself);
-    mm = DATE_GET_MINUTE(utcself);
-    ss = DATE_GET_SECOND(utcself);
-
-    Py_DECREF(utcself);
-    return build_struct_time(y, m, d, hh, mm, ss, 0);
-}
-
-/* Pickle support, a simple use of __reduce__. */
-
-/* Let basestate be the non-tzinfo data string.
- * If tzinfo is None, this returns (basestate,), else (basestate, tzinfo).
- * So it's a tuple in any (non-error) case.
- * __getstate__ isn't exposed.
- */
-static PyObject *
-datetime_getstate(PyDateTime_DateTime *self)
-{
-    PyObject *basestate;
-    PyObject *result = NULL;
-
-    basestate = PyBytes_FromStringAndSize((char *)self->data,
-                                           _PyDateTime_DATETIME_DATASIZE);
-    if (basestate != NULL) {
-        if (! HASTZINFO(self) || self->tzinfo == Py_None)
-            result = PyTuple_Pack(1, basestate);
-        else
-            result = PyTuple_Pack(2, basestate, self->tzinfo);
-        Py_DECREF(basestate);
-    }
-    return result;
-}
-
-static PyObject *
-datetime_reduce(PyDateTime_DateTime *self, PyObject *arg)
-{
-    return Py_BuildValue("(ON)", Py_TYPE(self), datetime_getstate(self));
-}
-
-static PyMethodDef datetime_methods[] = {
-
-    /* Class methods: */
-
-    {"now",         (PyCFunction)datetime_now,
-     METH_VARARGS | METH_KEYWORDS | METH_CLASS,
-     PyDoc_STR("[tz] -> new datetime with tz's local day and time.")},
-
-    {"utcnow",         (PyCFunction)datetime_utcnow,
-     METH_NOARGS | METH_CLASS,
-     PyDoc_STR("Return a new datetime representing UTC day and time.")},
-
-    {"fromtimestamp", (PyCFunction)datetime_fromtimestamp,
-     METH_VARARGS | METH_KEYWORDS | METH_CLASS,
-     PyDoc_STR("timestamp[, tz] -> tz's local time from POSIX timestamp.")},
-
-    {"utcfromtimestamp", (PyCFunction)datetime_utcfromtimestamp,
-     METH_VARARGS | METH_CLASS,
-     PyDoc_STR("timestamp -> UTC datetime from a POSIX timestamp "
-               "(like time.time()).")},
-
-    {"strptime", (PyCFunction)datetime_strptime,
-     METH_VARARGS | METH_CLASS,
-     PyDoc_STR("string, format -> new datetime parsed from a string "
-               "(like time.strptime()).")},
-
-    {"combine", (PyCFunction)datetime_combine,
-     METH_VARARGS | METH_KEYWORDS | METH_CLASS,
-     PyDoc_STR("date, time -> datetime with same date and time fields")},
-
-    /* Instance methods: */
-
-    {"date",   (PyCFunction)datetime_getdate, METH_NOARGS,
-     PyDoc_STR("Return date object with same year, month and day.")},
-
-    {"time",   (PyCFunction)datetime_gettime, METH_NOARGS,
-     PyDoc_STR("Return time object with same time but with tzinfo=None.")},
-
-    {"timetz",   (PyCFunction)datetime_gettimetz, METH_NOARGS,
-     PyDoc_STR("Return time object with same time and tzinfo.")},
-
-    {"ctime",       (PyCFunction)datetime_ctime,        METH_NOARGS,
-     PyDoc_STR("Return ctime() style string.")},
-
-    {"timetuple",   (PyCFunction)datetime_timetuple, METH_NOARGS,
-     PyDoc_STR("Return time tuple, compatible with time.localtime().")},
-
-    {"utctimetuple",   (PyCFunction)datetime_utctimetuple, METH_NOARGS,
-     PyDoc_STR("Return UTC time tuple, compatible with time.localtime().")},
-
-    {"isoformat",   (PyCFunction)datetime_isoformat, METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("[sep] -> string in ISO 8601 format, "
-               "YYYY-MM-DDTHH:MM:SS[.mmmmmm][+HH:MM].\n\n"
-               "sep is used to separate the year from the time, and "
-               "defaults to 'T'.")},
-
-    {"utcoffset",       (PyCFunction)datetime_utcoffset, METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.utcoffset(self).")},
-
-    {"tzname",          (PyCFunction)datetime_tzname,   METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.tzname(self).")},
-
-    {"dst",             (PyCFunction)datetime_dst, METH_NOARGS,
-     PyDoc_STR("Return self.tzinfo.dst(self).")},
-
-    {"replace",     (PyCFunction)datetime_replace,      METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("Return datetime with new specified fields.")},
-
-    {"astimezone",  (PyCFunction)datetime_astimezone, METH_VARARGS | METH_KEYWORDS,
-     PyDoc_STR("tz -> convert to local time in new timezone tz\n")},
-
-    {"__reduce__", (PyCFunction)datetime_reduce,     METH_NOARGS,
-     PyDoc_STR("__reduce__() -> (cls, state)")},
-
-    {NULL,      NULL}
-};
-
-static char datetime_doc[] =
-PyDoc_STR("datetime(year, month, day[, hour[, minute[, second[, microsecond[,tzinfo]]]]])\n\
-\n\
-The year, month and day arguments are required. tzinfo may be None, or an\n\
-instance of a tzinfo subclass. The remaining arguments may be ints or longs.\n");
-
-static PyNumberMethods datetime_as_number = {
-    datetime_add,                               /* nb_add */
-    datetime_subtract,                          /* nb_subtract */
-    0,                                          /* nb_multiply */
-    0,                                          /* nb_remainder */
-    0,                                          /* nb_divmod */
-    0,                                          /* nb_power */
-    0,                                          /* nb_negative */
-    0,                                          /* nb_positive */
-    0,                                          /* nb_absolute */
-    0,                                          /* nb_bool */
-};
-
-static PyTypeObject PyDateTime_DateTimeType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "datetime.datetime",                        /* tp_name */
-    sizeof(PyDateTime_DateTime),                /* tp_basicsize */
-    0,                                          /* tp_itemsize */
-    (destructor)datetime_dealloc,               /* tp_dealloc */
-    0,                                          /* tp_print */
-    0,                                          /* tp_getattr */
-    0,                                          /* tp_setattr */
-    0,                                          /* tp_reserved */
-    (reprfunc)datetime_repr,                    /* tp_repr */
-    &datetime_as_number,                        /* tp_as_number */
-    0,                                          /* tp_as_sequence */
-    0,                                          /* tp_as_mapping */
-    (hashfunc)datetime_hash,                    /* tp_hash */
-    0,                                          /* tp_call */
-    (reprfunc)datetime_str,                     /* tp_str */
-    PyObject_GenericGetAttr,                    /* tp_getattro */
-    0,                                          /* tp_setattro */
-    0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
-    datetime_doc,                               /* tp_doc */
-    0,                                          /* tp_traverse */
-    0,                                          /* tp_clear */
-    datetime_richcompare,                       /* tp_richcompare */
-    0,                                          /* tp_weaklistoffset */
-    0,                                          /* tp_iter */
-    0,                                          /* tp_iternext */
-    datetime_methods,                           /* tp_methods */
-    0,                                          /* tp_members */
-    datetime_getset,                            /* tp_getset */
-    &PyDateTime_DateType,                       /* tp_base */
-    0,                                          /* tp_dict */
-    0,                                          /* tp_descr_get */
-    0,                                          /* tp_descr_set */
-    0,                                          /* tp_dictoffset */
-    0,                                          /* tp_init */
-    datetime_alloc,                             /* tp_alloc */
-    datetime_new,                               /* tp_new */
-    0,                                          /* tp_free */
-};
-
-/* ---------------------------------------------------------------------------
- * Module methods and initialization.
- */
-
-static PyMethodDef module_methods[] = {
-    {NULL, NULL}
-};
-
-/* C API.  Clients get at this via PyDateTime_IMPORT, defined in
- * datetime.h.
- */
-static PyDateTime_CAPI CAPI = {
-    &PyDateTime_DateType,
-    &PyDateTime_DateTimeType,
-    &PyDateTime_TimeType,
-    &PyDateTime_DeltaType,
-    &PyDateTime_TZInfoType,
-    new_date_ex,
-    new_datetime_ex,
-    new_time_ex,
-    new_delta_ex,
-    datetime_fromtimestamp,
-    date_fromtimestamp
-};
-
-
-
-static struct PyModuleDef datetimemodule = {
-    PyModuleDef_HEAD_INIT,
-    "datetime",
-    "Fast implementation of the datetime type.",
-    -1,
-    module_methods,
-    NULL,
-    NULL,
-    NULL,
-    NULL
-};
-
-PyMODINIT_FUNC
-PyInit_datetime(void)
-{
-    PyObject *m;        /* a module object */
-    PyObject *d;        /* its dict */
-    PyObject *x;
-    PyObject *delta;
-
-    m = PyModule_Create(&datetimemodule);
-    if (m == NULL)
-        return NULL;
-
-    if (PyType_Ready(&PyDateTime_DateType) < 0)
-        return NULL;
-    if (PyType_Ready(&PyDateTime_DateTimeType) < 0)
-        return NULL;
-    if (PyType_Ready(&PyDateTime_DeltaType) < 0)
-        return NULL;
-    if (PyType_Ready(&PyDateTime_TimeType) < 0)
-        return NULL;
-    if (PyType_Ready(&PyDateTime_TZInfoType) < 0)
-        return NULL;
-    if (PyType_Ready(&PyDateTime_TimeZoneType) < 0)
-        return NULL;
-
-    /* timedelta values */
-    d = PyDateTime_DeltaType.tp_dict;
-
-    x = new_delta(0, 0, 1, 0);
-    if (x == NULL || PyDict_SetItemString(d, "resolution", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_delta(-MAX_DELTA_DAYS, 0, 0, 0);
-    if (x == NULL || PyDict_SetItemString(d, "min", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_delta(MAX_DELTA_DAYS, 24*3600-1, 1000000-1, 0);
-    if (x == NULL || PyDict_SetItemString(d, "max", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    /* date values */
-    d = PyDateTime_DateType.tp_dict;
-
-    x = new_date(1, 1, 1);
-    if (x == NULL || PyDict_SetItemString(d, "min", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_date(MAXYEAR, 12, 31);
-    if (x == NULL || PyDict_SetItemString(d, "max", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_delta(1, 0, 0, 0);
-    if (x == NULL || PyDict_SetItemString(d, "resolution", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    /* time values */
-    d = PyDateTime_TimeType.tp_dict;
-
-    x = new_time(0, 0, 0, 0, Py_None);
-    if (x == NULL || PyDict_SetItemString(d, "min", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_time(23, 59, 59, 999999, Py_None);
-    if (x == NULL || PyDict_SetItemString(d, "max", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_delta(0, 0, 1, 0);
-    if (x == NULL || PyDict_SetItemString(d, "resolution", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    /* datetime values */
-    d = PyDateTime_DateTimeType.tp_dict;
-
-    x = new_datetime(1, 1, 1, 0, 0, 0, 0, Py_None);
-    if (x == NULL || PyDict_SetItemString(d, "min", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_datetime(MAXYEAR, 12, 31, 23, 59, 59, 999999, Py_None);
-    if (x == NULL || PyDict_SetItemString(d, "max", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    x = new_delta(0, 0, 1, 0);
-    if (x == NULL || PyDict_SetItemString(d, "resolution", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    /* timezone values */
-    d = PyDateTime_TimeZoneType.tp_dict;
-
-    delta = new_delta(0, 0, 0, 0);
-    if (delta == NULL)
-        return NULL;
-    x = new_timezone(delta, NULL);
-    Py_DECREF(delta);
-    if (x == NULL || PyDict_SetItemString(d, "utc", x) < 0)
-        return NULL;
-    PyDateTime_TimeZone_UTC = x;
-
-    delta = new_delta(-1, 60, 0, 1); /* -23:59 */
-    if (delta == NULL)
-        return NULL;
-    x = new_timezone(delta, NULL);
-    Py_DECREF(delta);
-    if (x == NULL || PyDict_SetItemString(d, "min", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    delta = new_delta(0, (23 * 60 + 59) * 60, 0, 0); /* +23:59 */
-    if (delta == NULL)
-        return NULL;
-    x = new_timezone(delta, NULL);
-    Py_DECREF(delta);
-    if (x == NULL || PyDict_SetItemString(d, "max", x) < 0)
-        return NULL;
-    Py_DECREF(x);
-
-    /* module initialization */
-    PyModule_AddIntConstant(m, "MINYEAR", MINYEAR);
-    PyModule_AddIntConstant(m, "MAXYEAR", MAXYEAR);
-
-    Py_INCREF(&PyDateTime_DateType);
-    PyModule_AddObject(m, "date", (PyObject *) &PyDateTime_DateType);
-
-    Py_INCREF(&PyDateTime_DateTimeType);
-    PyModule_AddObject(m, "datetime",
-                       (PyObject *)&PyDateTime_DateTimeType);
-
-    Py_INCREF(&PyDateTime_TimeType);
-    PyModule_AddObject(m, "time", (PyObject *) &PyDateTime_TimeType);
-
-    Py_INCREF(&PyDateTime_DeltaType);
-    PyModule_AddObject(m, "timedelta", (PyObject *) &PyDateTime_DeltaType);
-
-    Py_INCREF(&PyDateTime_TZInfoType);
-    PyModule_AddObject(m, "tzinfo", (PyObject *) &PyDateTime_TZInfoType);
-
-    Py_INCREF(&PyDateTime_TimeZoneType);
-    PyModule_AddObject(m, "timezone", (PyObject *) &PyDateTime_TimeZoneType);
-
-    x = PyCapsule_New(&CAPI, PyDateTime_CAPSULE_NAME, NULL);
-    if (x == NULL)
-        return NULL;
-    PyModule_AddObject(m, "datetime_CAPI", x);
-
-    /* A 4-year cycle has an extra leap day over what we'd get from
-     * pasting together 4 single years.
-     */
-    assert(DI4Y == 4 * 365 + 1);
-    assert(DI4Y == days_before_year(4+1));
-
-    /* Similarly, a 400-year cycle has an extra leap day over what we'd
-     * get from pasting together 4 100-year cycles.
-     */
-    assert(DI400Y == 4 * DI100Y + 1);
-    assert(DI400Y == days_before_year(400+1));
-
-    /* OTOH, a 100-year cycle has one fewer leap day than we'd get from
-     * pasting together 25 4-year cycles.
-     */
-    assert(DI100Y == 25 * DI4Y - 1);
-    assert(DI100Y == days_before_year(100+1));
-
-    us_per_us = PyLong_FromLong(1);
-    us_per_ms = PyLong_FromLong(1000);
-    us_per_second = PyLong_FromLong(1000000);
-    us_per_minute = PyLong_FromLong(60000000);
-    seconds_per_day = PyLong_FromLong(24 * 3600);
-    if (us_per_us == NULL || us_per_ms == NULL || us_per_second == NULL ||
-        us_per_minute == NULL || seconds_per_day == NULL)
-        return NULL;
-
-    /* The rest are too big for 32-bit ints, but even
-     * us_per_week fits in 40 bits, so doubles should be exact.
-     */
-    us_per_hour = PyLong_FromDouble(3600000000.0);
-    us_per_day = PyLong_FromDouble(86400000000.0);
-    us_per_week = PyLong_FromDouble(604800000000.0);
-    if (us_per_hour == NULL || us_per_day == NULL || us_per_week == NULL)
-        return NULL;
-    return m;
-}
-
-/* ---------------------------------------------------------------------------
-Some time zone algebra.  For a datetime x, let
-    x.n = x stripped of its timezone -- its naive time.
-    x.o = x.utcoffset(), and assuming that doesn't raise an exception or
-      return None
-    x.d = x.dst(), and assuming that doesn't raise an exception or
-      return None
-    x.s = x's standard offset, x.o - x.d
-
-Now some derived rules, where k is a duration (timedelta).
-
-1. x.o = x.s + x.d
-   This follows from the definition of x.s.
-
-2. If x and y have the same tzinfo member, x.s = y.s.
-   This is actually a requirement, an assumption we need to make about
-   sane tzinfo classes.
-
-3. The naive UTC time corresponding to x is x.n - x.o.
-   This is again a requirement for a sane tzinfo class.
-
-4. (x+k).s = x.s
-   This follows from #2, and that datimetimetz+timedelta preserves tzinfo.
-
-5. (x+k).n = x.n + k
-   Again follows from how arithmetic is defined.
-
-Now we can explain tz.fromutc(x).  Let's assume it's an interesting case
-(meaning that the various tzinfo methods exist, and don't blow up or return
-None when called).
-
-The function wants to return a datetime y with timezone tz, equivalent to x.
-x is already in UTC.
-
-By #3, we want
-
-    y.n - y.o = x.n                             [1]
-
-The algorithm starts by attaching tz to x.n, and calling that y.  So
-x.n = y.n at the start.  Then it wants to add a duration k to y, so that [1]
-becomes true; in effect, we want to solve [2] for k:
-
-   (y+k).n - (y+k).o = x.n                      [2]
-
-By #1, this is the same as
-
-   (y+k).n - ((y+k).s + (y+k).d) = x.n          [3]
-
-By #5, (y+k).n = y.n + k, which equals x.n + k because x.n=y.n at the start.
-Substituting that into [3],
-
-   x.n + k - (y+k).s - (y+k).d = x.n; the x.n terms cancel, leaving
-   k - (y+k).s - (y+k).d = 0; rearranging,
-   k = (y+k).s - (y+k).d; by #4, (y+k).s == y.s, so
-   k = y.s - (y+k).d
-
-On the RHS, (y+k).d can't be computed directly, but y.s can be, and we
-approximate k by ignoring the (y+k).d term at first.  Note that k can't be
-very large, since all offset-returning methods return a duration of magnitude
-less than 24 hours.  For that reason, if y is firmly in std time, (y+k).d must
-be 0, so ignoring it has no consequence then.
-
-In any case, the new value is
-
-    z = y + y.s                                 [4]
-
-It's helpful to step back at look at [4] from a higher level:  it's simply
-mapping from UTC to tz's standard time.
-
-At this point, if
-
-    z.n - z.o = x.n                             [5]
-
-we have an equivalent time, and are almost done.  The insecurity here is
-at the start of daylight time.  Picture US Eastern for concreteness.  The wall
-time jumps from 1:59 to 3:00, and wall hours of the form 2:MM don't make good
-sense then.  The docs ask that an Eastern tzinfo class consider such a time to
-be EDT (because it's "after 2"), which is a redundant spelling of 1:MM EST
-on the day DST starts.  We want to return the 1:MM EST spelling because that's
-the only spelling that makes sense on the local wall clock.
-
-In fact, if [5] holds at this point, we do have the standard-time spelling,
-but that takes a bit of proof.  We first prove a stronger result.  What's the
-difference between the LHS and RHS of [5]?  Let
-
-    diff = x.n - (z.n - z.o)                    [6]
-
-Now
-    z.n =                       by [4]
-    (y + y.s).n =               by #5
-    y.n + y.s =                 since y.n = x.n
-    x.n + y.s =                 since z and y are have the same tzinfo member,
-                                    y.s = z.s by #2
-    x.n + z.s
-
-Plugging that back into [6] gives
-
-    diff =
-    x.n - ((x.n + z.s) - z.o) =     expanding
-    x.n - x.n - z.s + z.o =         cancelling
-    - z.s + z.o =                   by #2
-    z.d
-
-So diff = z.d.
-
-If [5] is true now, diff = 0, so z.d = 0 too, and we have the standard-time
-spelling we wanted in the endcase described above.  We're done.  Contrarily,
-if z.d = 0, then we have a UTC equivalent, and are also done.
-
-If [5] is not true now, diff = z.d != 0, and z.d is the offset we need to
-add to z (in effect, z is in tz's standard time, and we need to shift the
-local clock into tz's daylight time).
-
-Let
-
-    z' = z + z.d = z + diff                     [7]
-
-and we can again ask whether
-
-    z'.n - z'.o = x.n                           [8]
-
-If so, we're done.  If not, the tzinfo class is insane, according to the
-assumptions we've made.  This also requires a bit of proof.  As before, let's
-compute the difference between the LHS and RHS of [8] (and skipping some of
-the justifications for the kinds of substitutions we've done several times
-already):
-
-    diff' = x.n - (z'.n - z'.o) =           replacing z'.n via [7]
-        x.n  - (z.n + diff - z'.o) =    replacing diff via [6]
-        x.n - (z.n + x.n - (z.n - z.o) - z'.o) =
-        x.n - z.n - x.n + z.n - z.o + z'.o =    cancel x.n
-        - z.n + z.n - z.o + z'.o =              cancel z.n
-        - z.o + z'.o =                      #1 twice
-        -z.s - z.d + z'.s + z'.d =          z and z' have same tzinfo
-        z'.d - z.d
-
-So z' is UTC-equivalent to x iff z'.d = z.d at this point.  If they are equal,
-we've found the UTC-equivalent so are done.  In fact, we stop with [7] and
-return z', not bothering to compute z'.d.
-
-How could z.d and z'd differ?  z' = z + z.d [7], so merely moving z' by
-a dst() offset, and starting *from* a time already in DST (we know z.d != 0),
-would have to change the result dst() returns:  we start in DST, and moving
-a little further into it takes us out of DST.
-
-There isn't a sane case where this can happen.  The closest it gets is at
-the end of DST, where there's an hour in UTC with no spelling in a hybrid
-tzinfo class.  In US Eastern, that's 5:MM UTC = 0:MM EST = 1:MM EDT.  During
-that hour, on an Eastern clock 1:MM is taken as being in standard time (6:MM
-UTC) because the docs insist on that, but 0:MM is taken as being in daylight
-time (4:MM UTC).  There is no local time mapping to 5:MM UTC.  The local
-clock jumps from 1:59 back to 1:00 again, and repeats the 1:MM hour in
-standard time.  Since that's what the local clock *does*, we want to map both
-UTC hours 5:MM and 6:MM to 1:MM Eastern.  The result is ambiguous
-in local time, but so it goes -- it's the way the local clock works.
-
-When x = 5:MM UTC is the input to this algorithm, x.o=0, y.o=-5 and y.d=0,
-so z=0:MM.  z.d=60 (minutes) then, so [5] doesn't hold and we keep going.
-z' = z + z.d = 1:MM then, and z'.d=0, and z'.d - z.d = -60 != 0 so [8]
-(correctly) concludes that z' is not UTC-equivalent to x.
-
-Because we know z.d said z was in daylight time (else [5] would have held and
-we would have stopped then), and we know z.d != z'.d (else [8] would have held
-and we would have stopped then), and there are only 2 possible values dst() can
-return in Eastern, it follows that z'.d must be 0 (which it is in the example,
-but the reasoning doesn't depend on the example -- it depends on there being
-two possible dst() outcomes, one zero and the other non-zero).  Therefore
-z' must be in standard time, and is the spelling we want in this case.
-
-Note again that z' is not UTC-equivalent as far as the hybrid tzinfo class is
-concerned (because it takes z' as being in standard time rather than the
-daylight time we intend here), but returning it gives the real-life "local
-clock repeats an hour" behavior when mapping the "unspellable" UTC hour into
-tz.
-
-When the input is 6:MM, z=1:MM and z.d=0, and we stop at once, again with
-the 1:MM standard time spelling we want.
-
-So how can this break?  One of the assumptions must be violated.  Two
-possibilities:
-
-1) [2] effectively says that y.s is invariant across all y belong to a given
-   time zone.  This isn't true if, for political reasons or continental drift,
-   a region decides to change its base offset from UTC.
-
-2) There may be versions of "double daylight" time where the tail end of
-   the analysis gives up a step too early.  I haven't thought about that
-   enough to say.
-
-In any case, it's clear that the default fromutc() is strong enough to handle
-"almost all" time zones:  so long as the standard offset is invariant, it
-doesn't matter if daylight time transition points change from year to year, or
-if daylight time is skipped in some years; it doesn't matter how large or
-small dst() may get within its bounds; and it doesn't even matter if some
-perverse time zone returns a negative dst()).  So a breaking case must be
-pretty bizarre, and a tzinfo subclass can override fromutc() if it is.
---------------------------------------------------------------------------- */