summaryrefslogtreecommitdiffstats
path: root/Doc/c-api/datetime.rst
blob: 044d3e5a1d529cb0a1a5c7d0f2b44c956b0b1e8c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
.. highlightlang:: c

.. _datetimeobjects:

DateTime Objects
----------------

Various date and time objects are supplied by the :mod:`datetime` module.
Before using any of these functions, the header file :file:`datetime.h` must be
included in your source (note that this is not included by :file:`Python.h`),
and the macro :cfunc:`PyDateTime_IMPORT` must be invoked.  The macro puts a
pointer to a C structure into a static variable,  ``PyDateTimeAPI``, that is
used by the following macros.

Type-check macros:

.. cfunction:: int PyDate_Check(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DateType` or a subtype of
   :cdata:`PyDateTime_DateType`.  *ob* must not be *NULL*.


.. cfunction:: int PyDate_CheckExact(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DateType`. *ob* must not be
   *NULL*.


.. cfunction:: int PyDateTime_Check(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DateTimeType` or a subtype of
   :cdata:`PyDateTime_DateTimeType`.  *ob* must not be *NULL*.


.. cfunction:: int PyDateTime_CheckExact(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DateTimeType`. *ob* must not
   be *NULL*.


.. cfunction:: int PyTime_Check(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_TimeType` or a subtype of
   :cdata:`PyDateTime_TimeType`.  *ob* must not be *NULL*.


.. cfunction:: int PyTime_CheckExact(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_TimeType`. *ob* must not be
   *NULL*.


.. cfunction:: int PyDelta_Check(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DeltaType` or a subtype of
   :cdata:`PyDateTime_DeltaType`.  *ob* must not be *NULL*.


.. cfunction:: int PyDelta_CheckExact(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_DeltaType`. *ob* must not be
   *NULL*.


.. cfunction:: int PyTZInfo_Check(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_TZInfoType` or a subtype of
   :cdata:`PyDateTime_TZInfoType`.  *ob* must not be *NULL*.


.. cfunction:: int PyTZInfo_CheckExact(PyObject *ob)

   Return true if *ob* is of type :cdata:`PyDateTime_TZInfoType`. *ob* must not be
   *NULL*.


Macros to create objects:

.. cfunction:: PyObject* PyDate_FromDate(int year, int month, int day)

   Return a ``datetime.date`` object with the specified year, month and day.


.. cfunction:: PyObject* PyDateTime_FromDateAndTime(int year, int month, int day, int hour, int minute, int second, int usecond)

   Return a ``datetime.datetime`` object with the specified year, month, day, hour,
   minute, second and microsecond.


.. cfunction:: PyObject* PyTime_FromTime(int hour, int minute, int second, int usecond)

   Return a ``datetime.time`` object with the specified hour, minute, second and
   microsecond.


.. cfunction:: PyObject* PyDelta_FromDSU(int days, int seconds, int useconds)

   Return a ``datetime.timedelta`` object representing the given number of days,
   seconds and microseconds.  Normalization is performed so that the resulting
   number of microseconds and seconds lie in the ranges documented for
   ``datetime.timedelta`` objects.


Macros to extract fields from date objects.  The argument must be an instance of
:cdata:`PyDateTime_Date`, including subclasses (such as
:cdata:`PyDateTime_DateTime`).  The argument must not be *NULL*, and the type is
not checked:

.. cfunction:: int PyDateTime_GET_YEAR(PyDateTime_Date *o)

   Return the year, as a positive int.


.. cfunction:: int PyDateTime_GET_MONTH(PyDateTime_Date *o)

   Return the month, as an int from 1 through 12.


.. cfunction:: int PyDateTime_GET_DAY(PyDateTime_Date *o)

   Return the day, as an int from 1 through 31.


Macros to extract fields from datetime objects.  The argument must be an
instance of :cdata:`PyDateTime_DateTime`, including subclasses. The argument
must not be *NULL*, and the type is not checked:

.. cfunction:: int PyDateTime_DATE_GET_HOUR(PyDateTime_DateTime *o)

   Return the hour, as an int from 0 through 23.


.. cfunction:: int PyDateTime_DATE_GET_MINUTE(PyDateTime_DateTime *o)

   Return the minute, as an int from 0 through 59.


.. cfunction:: int PyDateTime_DATE_GET_SECOND(PyDateTime_DateTime *o)

   Return the second, as an int from 0 through 59.


.. cfunction:: int PyDateTime_DATE_GET_MICROSECOND(PyDateTime_DateTime *o)

   Return the microsecond, as an int from 0 through 999999.


Macros to extract fields from time objects.  The argument must be an instance of
:cdata:`PyDateTime_Time`, including subclasses. The argument must not be *NULL*,
and the type is not checked:

.. cfunction:: int PyDateTime_TIME_GET_HOUR(PyDateTime_Time *o)

   Return the hour, as an int from 0 through 23.


.. cfunction:: int PyDateTime_TIME_GET_MINUTE(PyDateTime_Time *o)

   Return the minute, as an int from 0 through 59.


.. cfunction:: int PyDateTime_TIME_GET_SECOND(PyDateTime_Time *o)

   Return the second, as an int from 0 through 59.


.. cfunction:: int PyDateTime_TIME_GET_MICROSECOND(PyDateTime_Time *o)

   Return the microsecond, as an int from 0 through 999999.


Macros for the convenience of modules implementing the DB API:

.. cfunction:: PyObject* PyDateTime_FromTimestamp(PyObject *args)

   Create and return a new ``datetime.datetime`` object given an argument tuple
   suitable for passing to ``datetime.datetime.fromtimestamp()``.


.. cfunction:: PyObject* PyDate_FromTimestamp(PyObject *args)

   Create and return a new ``datetime.date`` object given an argument tuple
   suitable for passing to ``datetime.date.fromtimestamp()``.