mirror of
https://github.com/python/cpython
synced 2024-09-05 00:05:39 +00:00
315fc52db1
I think that none of these API calls can fail, but only few of them are documented as such. Add the sentence "This function always succeeds" (which is the same already used e.g. by PyNumber_Check) to all of them.
266 lines
8.2 KiB
ReStructuredText
266 lines
8.2 KiB
ReStructuredText
.. highlight:: c
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.. _datetimeobjects:
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DateTime Objects
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----------------
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Various date and time objects are supplied by the :mod:`datetime` module.
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Before using any of these functions, the header file :file:`datetime.h` must be
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included in your source (note that this is not included by :file:`Python.h`),
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and the macro :c:macro:`PyDateTime_IMPORT` must be invoked, usually as part of
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the module initialisation function. The macro puts a pointer to a C structure
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into a static variable, :c:data:`PyDateTimeAPI`, that is used by the following
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macros.
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Macro for access to the UTC singleton:
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.. c:var:: PyObject* PyDateTime_TimeZone_UTC
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Returns the time zone singleton representing UTC, the same object as
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:attr:`datetime.timezone.utc`.
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.. versionadded:: 3.7
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Type-check macros:
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.. c:function:: int PyDate_Check(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DateType` or a subtype of
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:c:data:`PyDateTime_DateType`. *ob* must not be ``NULL``. This function always
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succeeds.
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.. c:function:: int PyDate_CheckExact(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DateType`. *ob* must not be
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``NULL``. This function always succeeds.
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.. c:function:: int PyDateTime_Check(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DateTimeType` or a subtype of
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:c:data:`PyDateTime_DateTimeType`. *ob* must not be ``NULL``. This function always
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succeeds.
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.. c:function:: int PyDateTime_CheckExact(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DateTimeType`. *ob* must not
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be ``NULL``. This function always succeeds.
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.. c:function:: int PyTime_Check(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_TimeType` or a subtype of
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:c:data:`PyDateTime_TimeType`. *ob* must not be ``NULL``. This function always
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succeeds.
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.. c:function:: int PyTime_CheckExact(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_TimeType`. *ob* must not be
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``NULL``. This function always succeeds.
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.. c:function:: int PyDelta_Check(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DeltaType` or a subtype of
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:c:data:`PyDateTime_DeltaType`. *ob* must not be ``NULL``. This function always
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succeeds.
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.. c:function:: int PyDelta_CheckExact(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_DeltaType`. *ob* must not be
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``NULL``. This function always succeeds.
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.. c:function:: int PyTZInfo_Check(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_TZInfoType` or a subtype of
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:c:data:`PyDateTime_TZInfoType`. *ob* must not be ``NULL``. This function always
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succeeds.
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.. c:function:: int PyTZInfo_CheckExact(PyObject *ob)
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Return true if *ob* is of type :c:data:`PyDateTime_TZInfoType`. *ob* must not be
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``NULL``. This function always succeeds.
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Macros to create objects:
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.. c:function:: PyObject* PyDate_FromDate(int year, int month, int day)
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Return a :class:`datetime.date` object with the specified year, month and day.
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.. c:function:: PyObject* PyDateTime_FromDateAndTime(int year, int month, int day, int hour, int minute, int second, int usecond)
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Return a :class:`datetime.datetime` object with the specified year, month, day, hour,
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minute, second and microsecond.
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.. c:function:: PyObject* PyDateTime_FromDateAndTimeAndFold(int year, int month, int day, int hour, int minute, int second, int usecond, int fold)
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Return a :class:`datetime.datetime` object with the specified year, month, day, hour,
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minute, second, microsecond and fold.
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.. versionadded:: 3.6
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.. c:function:: PyObject* PyTime_FromTime(int hour, int minute, int second, int usecond)
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Return a :class:`datetime.time` object with the specified hour, minute, second and
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microsecond.
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.. c:function:: PyObject* PyTime_FromTimeAndFold(int hour, int minute, int second, int usecond, int fold)
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Return a :class:`datetime.time` object with the specified hour, minute, second,
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microsecond and fold.
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.. versionadded:: 3.6
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.. c:function:: PyObject* PyDelta_FromDSU(int days, int seconds, int useconds)
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Return a :class:`datetime.timedelta` object representing the given number
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of days, seconds and microseconds. Normalization is performed so that the
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resulting number of microseconds and seconds lie in the ranges documented for
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:class:`datetime.timedelta` objects.
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.. c:function:: PyObject* PyTimeZone_FromOffset(PyDateTime_DeltaType* offset)
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Return a :class:`datetime.timezone` object with an unnamed fixed offset
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represented by the *offset* argument.
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.. versionadded:: 3.7
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.. c:function:: PyObject* PyTimeZone_FromOffsetAndName(PyDateTime_DeltaType* offset, PyUnicode* name)
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Return a :class:`datetime.timezone` object with a fixed offset represented
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by the *offset* argument and with tzname *name*.
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.. versionadded:: 3.7
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Macros to extract fields from date objects. The argument must be an instance of
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:c:data:`PyDateTime_Date`, including subclasses (such as
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:c:data:`PyDateTime_DateTime`). The argument must not be ``NULL``, and the type is
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not checked:
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.. c:function:: int PyDateTime_GET_YEAR(PyDateTime_Date *o)
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Return the year, as a positive int.
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.. c:function:: int PyDateTime_GET_MONTH(PyDateTime_Date *o)
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Return the month, as an int from 1 through 12.
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.. c:function:: int PyDateTime_GET_DAY(PyDateTime_Date *o)
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Return the day, as an int from 1 through 31.
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Macros to extract fields from datetime objects. The argument must be an
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instance of :c:data:`PyDateTime_DateTime`, including subclasses. The argument
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must not be ``NULL``, and the type is not checked:
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.. c:function:: int PyDateTime_DATE_GET_HOUR(PyDateTime_DateTime *o)
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Return the hour, as an int from 0 through 23.
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.. c:function:: int PyDateTime_DATE_GET_MINUTE(PyDateTime_DateTime *o)
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Return the minute, as an int from 0 through 59.
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.. c:function:: int PyDateTime_DATE_GET_SECOND(PyDateTime_DateTime *o)
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Return the second, as an int from 0 through 59.
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.. c:function:: int PyDateTime_DATE_GET_MICROSECOND(PyDateTime_DateTime *o)
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Return the microsecond, as an int from 0 through 999999.
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.. c:function:: PyObject* PyDateTime_DATE_GET_TZINFO(PyDateTime_DateTime *o)
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Return the tzinfo (which may be ``None``).
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.. versionadded:: 3.10
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Macros to extract fields from time objects. The argument must be an instance of
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:c:data:`PyDateTime_Time`, including subclasses. The argument must not be ``NULL``,
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and the type is not checked:
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.. c:function:: int PyDateTime_TIME_GET_HOUR(PyDateTime_Time *o)
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Return the hour, as an int from 0 through 23.
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.. c:function:: int PyDateTime_TIME_GET_MINUTE(PyDateTime_Time *o)
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Return the minute, as an int from 0 through 59.
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.. c:function:: int PyDateTime_TIME_GET_SECOND(PyDateTime_Time *o)
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Return the second, as an int from 0 through 59.
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.. c:function:: int PyDateTime_TIME_GET_MICROSECOND(PyDateTime_Time *o)
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Return the microsecond, as an int from 0 through 999999.
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.. c:function:: PyObject* PyDateTime_TIME_GET_TZINFO(PyDateTime_Time *o)
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Return the tzinfo (which may be ``None``).
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.. versionadded:: 3.10
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Macros to extract fields from time delta objects. The argument must be an
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instance of :c:data:`PyDateTime_Delta`, including subclasses. The argument must
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not be ``NULL``, and the type is not checked:
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.. c:function:: int PyDateTime_DELTA_GET_DAYS(PyDateTime_Delta *o)
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Return the number of days, as an int from -999999999 to 999999999.
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.. versionadded:: 3.3
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.. c:function:: int PyDateTime_DELTA_GET_SECONDS(PyDateTime_Delta *o)
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Return the number of seconds, as an int from 0 through 86399.
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.. versionadded:: 3.3
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.. c:function:: int PyDateTime_DELTA_GET_MICROSECONDS(PyDateTime_Delta *o)
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Return the number of microseconds, as an int from 0 through 999999.
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.. versionadded:: 3.3
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Macros for the convenience of modules implementing the DB API:
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.. c:function:: PyObject* PyDateTime_FromTimestamp(PyObject *args)
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Create and return a new :class:`datetime.datetime` object given an argument
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tuple suitable for passing to :meth:`datetime.datetime.fromtimestamp()`.
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.. c:function:: PyObject* PyDate_FromTimestamp(PyObject *args)
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Create and return a new :class:`datetime.date` object given an argument
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tuple suitable for passing to :meth:`datetime.date.fromtimestamp()`.
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