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author | Georg Brandl <georg@python.org> | 2010-11-26 07:34:20 (GMT) |
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committer | Georg Brandl <georg@python.org> | 2010-11-26 07:34:20 (GMT) |
commit | 78f11edf3f934461191d4cec81fb4f13811c2be2 (patch) | |
tree | 0d89695787be0c415f9f246be6f47fe95161d980 /Doc/library/time.rst | |
parent | d8d884947bf4d592d0e0378ad9637175620292c6 (diff) | |
download | cpython-78f11edf3f934461191d4cec81fb4f13811c2be2.zip cpython-78f11edf3f934461191d4cec81fb4f13811c2be2.tar.gz cpython-78f11edf3f934461191d4cec81fb4f13811c2be2.tar.bz2 |
Merged revisions 85530,85534,85538,85540-85542 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r85530 | georg.brandl | 2010-10-15 17:32:05 +0200 (Fr, 15 Okt 2010) | 1 line
Refrain from using inline suites.
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r85534 | georg.brandl | 2010-10-15 18:19:43 +0200 (Fr, 15 Okt 2010) | 1 line
#9801: document how list and dict proxies created by Managers behave w.r.t. mutable items.
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r85538 | georg.brandl | 2010-10-15 18:35:46 +0200 (Fr, 15 Okt 2010) | 1 line
#7303: add documentation for useful pkgutil functions and classes.
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r85540 | georg.brandl | 2010-10-15 18:42:37 +0200 (Fr, 15 Okt 2010) | 1 line
#6798: fix wrong docs for the arguments to several trace events.
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r85541 | georg.brandl | 2010-10-15 18:53:24 +0200 (Fr, 15 Okt 2010) | 1 line
#4968: updates to inspect.is* function docs.
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r85542 | georg.brandl | 2010-10-15 19:01:15 +0200 (Fr, 15 Okt 2010) | 1 line
#7790: move table of struct_time members to the actual description of struct_time.
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Diffstat (limited to 'Doc/library/time.rst')
-rw-r--r-- | Doc/library/time.rst | 94 |
1 files changed, 50 insertions, 44 deletions
diff --git a/Doc/library/time.rst b/Doc/library/time.rst index c38b0e0..d6efcee 100644 --- a/Doc/library/time.rst +++ b/Doc/library/time.rst @@ -17,21 +17,23 @@ semantics of these functions varies among platforms. An explanation of some terminology and conventions is in order. - .. index:: single: epoch +.. index:: single: epoch * The :dfn:`epoch` is the point where the time starts. On January 1st of that year, at 0 hours, the "time since the epoch" is zero. For Unix, the epoch is 1970. To find out what the epoch is, look at ``gmtime(0)``. - .. index:: single: Year 2038 +.. index:: single: Year 2038 * The functions in this module do not handle dates and times before the epoch or far in the future. The cut-off point in the future is determined by the C library; for Unix, it is typically in 2038. - .. index:: - single: Year 2000 - single: Y2K +.. index:: + single: Year 2000 + single: Y2K + +.. _time-y2kissues: * **Year 2000 (Y2K) issues**: Python depends on the platform's C library, which generally doesn't have year 2000 issues, since all dates and times are @@ -48,16 +50,16 @@ An explanation of some terminology and conventions is in order. Note that this is new as of Python 1.5.2(a2); earlier versions, up to Python 1.5.1 and 1.5.2a1, would add 1900 to year values below 1900. - .. index:: - single: UTC - single: Coordinated Universal Time - single: Greenwich Mean Time +.. index:: + single: UTC + single: Coordinated Universal Time + single: Greenwich Mean Time * UTC is Coordinated Universal Time (formerly known as Greenwich Mean Time, or GMT). The acronym UTC is not a mistake but a compromise between English and French. - .. index:: single: Daylight Saving Time +.. index:: single: Daylight Saving Time * DST is Daylight Saving Time, an adjustment of the timezone by (usually) one hour during part of the year. DST rules are magic (determined by local law) and @@ -82,38 +84,7 @@ An explanation of some terminology and conventions is in order. values of :func:`gmtime`, :func:`localtime`, and :func:`strptime` also offer attribute names for individual fields. - +-------+-------------------+---------------------------------+ - | Index | Attribute | Values | - +=======+===================+=================================+ - | 0 | :attr:`tm_year` | (for example, 1993) | - +-------+-------------------+---------------------------------+ - | 1 | :attr:`tm_mon` | range [1, 12] | - +-------+-------------------+---------------------------------+ - | 2 | :attr:`tm_mday` | range [1, 31] | - +-------+-------------------+---------------------------------+ - | 3 | :attr:`tm_hour` | range [0, 23] | - +-------+-------------------+---------------------------------+ - | 4 | :attr:`tm_min` | range [0, 59] | - +-------+-------------------+---------------------------------+ - | 5 | :attr:`tm_sec` | range [0, 61]; see **(1)** in | - | | | :func:`strftime` description | - +-------+-------------------+---------------------------------+ - | 6 | :attr:`tm_wday` | range [0, 6], Monday is 0 | - +-------+-------------------+---------------------------------+ - | 7 | :attr:`tm_yday` | range [1, 366] | - +-------+-------------------+---------------------------------+ - | 8 | :attr:`tm_isdst` | 0, 1 or -1; see below | - +-------+-------------------+---------------------------------+ - - Note that unlike the C structure, the month value is a range of [1, 12], - not [0, 11]. - A year value will be handled as described under "Year 2000 (Y2K) issues" above. - A ``-1`` argument as the daylight savings flag, passed to :func:`mktime` will - usually result in the correct daylight savings state to be filled in. - - When a tuple with an incorrect length is passed to a function expecting a - :class:`struct_time`, or having elements of the wrong type, a :exc:`TypeError` - is raised. + See :class:`struct_time` for a description of these objects. .. versionchanged:: 2.2 The time value sequence was changed from a tuple to a :class:`struct_time`, with @@ -419,13 +390,48 @@ The module defines the following functions and data items: documented as supported. -.. data:: struct_time +.. class:: struct_time The type of the time value sequence returned by :func:`gmtime`, - :func:`localtime`, and :func:`strptime`. + :func:`localtime`, and :func:`strptime`. It is an object with a :term:`named + tuple` interface: values can be accessed by index and by attribute name. The + following values are present: + + +-------+-------------------+---------------------------------+ + | Index | Attribute | Values | + +=======+===================+=================================+ + | 0 | :attr:`tm_year` | (for example, 1993) | + +-------+-------------------+---------------------------------+ + | 1 | :attr:`tm_mon` | range [1, 12] | + +-------+-------------------+---------------------------------+ + | 2 | :attr:`tm_mday` | range [1, 31] | + +-------+-------------------+---------------------------------+ + | 3 | :attr:`tm_hour` | range [0, 23] | + +-------+-------------------+---------------------------------+ + | 4 | :attr:`tm_min` | range [0, 59] | + +-------+-------------------+---------------------------------+ + | 5 | :attr:`tm_sec` | range [0, 61]; see **(1)** in | + | | | :func:`strftime` description | + +-------+-------------------+---------------------------------+ + | 6 | :attr:`tm_wday` | range [0, 6], Monday is 0 | + +-------+-------------------+---------------------------------+ + | 7 | :attr:`tm_yday` | range [1, 366] | + +-------+-------------------+---------------------------------+ + | 8 | :attr:`tm_isdst` | 0, 1 or -1; see below | + +-------+-------------------+---------------------------------+ .. versionadded:: 2.2 + Note that unlike the C structure, the month value is a range of [1, 12], not + [0, 11]. A year value will be handled as described under :ref:`Year 2000 + (Y2K) issues <time-y2kissues>` above. A ``-1`` argument as the daylight + savings flag, passed to :func:`mktime` will usually result in the correct + daylight savings state to be filled in. + + When a tuple with an incorrect length is passed to a function expecting a + :class:`struct_time`, or having elements of the wrong type, a + :exc:`TypeError` is raised. + .. function:: time() |