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.. highlight:: 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 :c:macro:`!PyDateTime_IMPORT` must be invoked, usually as part of
the module initialisation function. The macro puts a pointer to a C structure
into a static variable, :c:data:`!PyDateTimeAPI`, that is used by the following
macros.
.. c:type:: PyDateTime_Date
This subtype of :c:type:`PyObject` represents a Python date object.
.. c:type:: PyDateTime_DateTime
This subtype of :c:type:`PyObject` represents a Python datetime object.
.. c:type:: PyDateTime_Time
This subtype of :c:type:`PyObject` represents a Python time object.
.. c:type:: PyDateTime_Delta
This subtype of :c:type:`PyObject` represents the difference between two datetime values.
.. c:var:: PyTypeObject PyDateTime_DateType
This instance of :c:type:`PyTypeObject` represents the Python date type;
it is the same object as :class:`datetime.date` in the Python layer.
.. c:var:: PyTypeObject PyDateTime_DateTimeType
This instance of :c:type:`PyTypeObject` represents the Python datetime type;
it is the same object as :class:`datetime.datetime` in the Python layer.
.. c:var:: PyTypeObject PyDateTime_TimeType
This instance of :c:type:`PyTypeObject` represents the Python time type;
it is the same object as :class:`datetime.time` in the Python layer.
.. c:var:: PyTypeObject PyDateTime_DeltaType
This instance of :c:type:`PyTypeObject` represents Python type for
the difference between two datetime values;
it is the same object as :class:`datetime.timedelta` in the Python layer.
.. c:var:: PyTypeObject PyDateTime_TZInfoType
This instance of :c:type:`PyTypeObject` represents the Python time zone info type;
it is the same object as :class:`datetime.tzinfo` in the Python layer.
Macro for access to the UTC singleton:
.. c:var:: PyObject* PyDateTime_TimeZone_UTC
Returns the time zone singleton representing UTC, the same object as
:attr:`datetime.timezone.utc`.
.. versionadded:: 3.7
Type-check macros:
.. c:function:: int PyDate_Check(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DateType` or a subtype of
:c:data:`!PyDateTime_DateType`. *ob* must not be ``NULL``. This function always
succeeds.
.. c:function:: int PyDate_CheckExact(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DateType`. *ob* must not be
``NULL``. This function always succeeds.
.. c:function:: int PyDateTime_Check(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DateTimeType` or a subtype of
:c:data:`!PyDateTime_DateTimeType`. *ob* must not be ``NULL``. This function always
succeeds.
.. c:function:: int PyDateTime_CheckExact(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DateTimeType`. *ob* must not
be ``NULL``. This function always succeeds.
.. c:function:: int PyTime_Check(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_TimeType` or a subtype of
:c:data:`!PyDateTime_TimeType`. *ob* must not be ``NULL``. This function always
succeeds.
.. c:function:: int PyTime_CheckExact(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_TimeType`. *ob* must not be
``NULL``. This function always succeeds.
.. c:function:: int PyDelta_Check(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DeltaType` or a subtype of
:c:data:`!PyDateTime_DeltaType`. *ob* must not be ``NULL``. This function always
succeeds.
.. c:function:: int PyDelta_CheckExact(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_DeltaType`. *ob* must not be
``NULL``. This function always succeeds.
.. c:function:: int PyTZInfo_Check(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_TZInfoType` or a subtype of
:c:data:`!PyDateTime_TZInfoType`. *ob* must not be ``NULL``. This function always
succeeds.
.. c:function:: int PyTZInfo_CheckExact(PyObject *ob)
Return true if *ob* is of type :c:data:`PyDateTime_TZInfoType`. *ob* must not be
``NULL``. This function always succeeds.
Macros to create objects:
.. c:function:: PyObject* PyDate_FromDate(int year, int month, int day)
Return a :class:`datetime.date` object with the specified year, month and day.
.. c:function:: PyObject* PyDateTime_FromDateAndTime(int year, int month, int day, int hour, int minute, int second, int usecond)
Return a :class:`datetime.datetime` object with the specified year, month, day, hour,
minute, second and microsecond.
.. c:function:: PyObject* PyDateTime_FromDateAndTimeAndFold(int year, int month, int day, int hour, int minute, int second, int usecond, int fold)
Return a :class:`datetime.datetime` object with the specified year, month, day, hour,
minute, second, microsecond and fold.
.. versionadded:: 3.6
.. c:function:: PyObject* PyTime_FromTime(int hour, int minute, int second, int usecond)
Return a :class:`datetime.time` object with the specified hour, minute, second and
microsecond.
.. c:function:: PyObject* PyTime_FromTimeAndFold(int hour, int minute, int second, int usecond, int fold)
Return a :class:`datetime.time` object with the specified hour, minute, second,
microsecond and fold.
.. versionadded:: 3.6
.. c:function:: PyObject* PyDelta_FromDSU(int days, int seconds, int useconds)
Return a :class:`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
:class:`datetime.timedelta` objects.
.. c:function:: PyObject* PyTimeZone_FromOffset(PyObject *offset)
Return a :class:`datetime.timezone` object with an unnamed fixed offset
represented by the *offset* argument.
.. versionadded:: 3.7
.. c:function:: PyObject* PyTimeZone_FromOffsetAndName(PyObject *offset, PyObject *name)
Return a :class:`datetime.timezone` object with a fixed offset represented
by the *offset* argument and with tzname *name*.
.. versionadded:: 3.7
Macros to extract fields from date objects. The argument must be an instance of
:c:type:`PyDateTime_Date`, including subclasses (such as
:c:type:`PyDateTime_DateTime`). The argument must not be ``NULL``, and the type is
not checked:
.. c:function:: int PyDateTime_GET_YEAR(PyDateTime_Date *o)
Return the year, as a positive int.
.. c:function:: int PyDateTime_GET_MONTH(PyDateTime_Date *o)
Return the month, as an int from 1 through 12.
.. c:function:: 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 :c:type:`PyDateTime_DateTime`, including subclasses. The argument
must not be ``NULL``, and the type is not checked:
.. c:function:: int PyDateTime_DATE_GET_HOUR(PyDateTime_DateTime *o)
Return the hour, as an int from 0 through 23.
.. c:function:: int PyDateTime_DATE_GET_MINUTE(PyDateTime_DateTime *o)
Return the minute, as an int from 0 through 59.
.. c:function:: int PyDateTime_DATE_GET_SECOND(PyDateTime_DateTime *o)
Return the second, as an int from 0 through 59.
.. c:function:: int PyDateTime_DATE_GET_MICROSECOND(PyDateTime_DateTime *o)
Return the microsecond, as an int from 0 through 999999.
.. c:function:: int PyDateTime_DATE_GET_FOLD(PyDateTime_DateTime *o)
Return the fold, as an int from 0 through 1.
.. versionadded:: 3.6
.. c:function:: PyObject* PyDateTime_DATE_GET_TZINFO(PyDateTime_DateTime *o)
Return the tzinfo (which may be ``None``).
.. versionadded:: 3.10
Macros to extract fields from time objects. The argument must be an instance of
:c:type:`PyDateTime_Time`, including subclasses. The argument must not be ``NULL``,
and the type is not checked:
.. c:function:: int PyDateTime_TIME_GET_HOUR(PyDateTime_Time *o)
Return the hour, as an int from 0 through 23.
.. c:function:: int PyDateTime_TIME_GET_MINUTE(PyDateTime_Time *o)
Return the minute, as an int from 0 through 59.
.. c:function:: int PyDateTime_TIME_GET_SECOND(PyDateTime_Time *o)
Return the second, as an int from 0 through 59.
.. c:function:: int PyDateTime_TIME_GET_MICROSECOND(PyDateTime_Time *o)
Return the microsecond, as an int from 0 through 999999.
.. c:function:: int PyDateTime_TIME_GET_FOLD(PyDateTime_Time *o)
Return the fold, as an int from 0 through 1.
.. versionadded:: 3.6
.. c:function:: PyObject* PyDateTime_TIME_GET_TZINFO(PyDateTime_Time *o)
Return the tzinfo (which may be ``None``).
.. versionadded:: 3.10
Macros to extract fields from time delta objects. The argument must be an
instance of :c:type:`PyDateTime_Delta`, including subclasses. The argument must
not be ``NULL``, and the type is not checked:
.. c:function:: int PyDateTime_DELTA_GET_DAYS(PyDateTime_Delta *o)
Return the number of days, as an int from -999999999 to 999999999.
.. versionadded:: 3.3
.. c:function:: int PyDateTime_DELTA_GET_SECONDS(PyDateTime_Delta *o)
Return the number of seconds, as an int from 0 through 86399.
.. versionadded:: 3.3
.. c:function:: int PyDateTime_DELTA_GET_MICROSECONDS(PyDateTime_Delta *o)
Return the number of microseconds, as an int from 0 through 999999.
.. versionadded:: 3.3
Macros for the convenience of modules implementing the DB API:
.. c:function:: PyObject* PyDateTime_FromTimestamp(PyObject *args)
Create and return a new :class:`datetime.datetime` object given an argument
tuple suitable for passing to :meth:`datetime.datetime.fromtimestamp`.
.. c:function:: PyObject* PyDate_FromTimestamp(PyObject *args)
Create and return a new :class:`datetime.date` object given an argument
tuple suitable for passing to :meth:`datetime.date.fromtimestamp`.
|
