DateTime 物件
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Various date and time objects are supplied by the "datetime" module.
Before using any of these functions, the header file "datetime.h" must
be included in your source (note that this is not included by
"Python.h"), and the 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, "PyDateTimeAPI",
that is used by the following macros.

Type-check macros:

int PyDate_Check(PyObject *ob)

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

   2.4 版新加入.

int PyDate_CheckExact(PyObject *ob)

   Return true if *ob* is of type "PyDateTime_DateType". *ob* must not
   be *NULL*.

   2.4 版新加入.

int PyDateTime_Check(PyObject *ob)

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

   2.4 版新加入.

int PyDateTime_CheckExact(PyObject *ob)

   Return true if *ob* is of type "PyDateTime_DateTimeType". *ob* must
   not be *NULL*.

   2.4 版新加入.

int PyTime_Check(PyObject *ob)

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

   2.4 版新加入.

int PyTime_CheckExact(PyObject *ob)

   Return true if *ob* is of type "PyDateTime_TimeType". *ob* must not
   be *NULL*.

   2.4 版新加入.

int PyDelta_Check(PyObject *ob)

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

   2.4 版新加入.

int PyDelta_CheckExact(PyObject *ob)

   Return true if *ob* is of type "PyDateTime_DeltaType". *ob* must
   not be *NULL*.

   2.4 版新加入.

int PyTZInfo_Check(PyObject *ob)

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

   2.4 版新加入.

int PyTZInfo_CheckExact(PyObject *ob)

   Return true if *ob* is of type "PyDateTime_TZInfoType". *ob* must
   not be *NULL*.

   2.4 版新加入.

Macros to create objects:

PyObject* PyDate_FromDate(int year, int month, int day)
    *Return value: New reference.*

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

   2.4 版新加入.

PyObject* PyDateTime_FromDateAndTime(int year, int month, int day, int hour, int minute, int second, int usecond)
    *Return value: New reference.*

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

   2.4 版新加入.

PyObject* PyTime_FromTime(int hour, int minute, int second, int usecond)
    *Return value: New reference.*

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

   2.4 版新加入.

PyObject* PyDelta_FromDSU(int days, int seconds, int useconds)
    *Return value: New reference.*

   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.

   2.4 版新加入.

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

int PyDateTime_GET_YEAR(PyDateTime_Date *o)

   回傳年份，為正整數。

   2.4 版新加入.

int PyDateTime_GET_MONTH(PyDateTime_Date *o)

   回傳月份，為正整數，從 1 到 12。

   2.4 版新加入.

int PyDateTime_GET_DAY(PyDateTime_Date *o)

   回傳日期，為正整數，從 1 到 31。

   2.4 版新加入.

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

int PyDateTime_DATE_GET_HOUR(PyDateTime_DateTime *o)

   回傳小時，為正整數，從 0 到 23。

   2.4 版新加入.

int PyDateTime_DATE_GET_MINUTE(PyDateTime_DateTime *o)

   回傳分鐘，為正整數，從 0 到 59。

   2.4 版新加入.

int PyDateTime_DATE_GET_SECOND(PyDateTime_DateTime *o)

   回傳秒，為正整數，從0 到59。

   2.4 版新加入.

int PyDateTime_DATE_GET_MICROSECOND(PyDateTime_DateTime *o)

   回傳微秒，為正整數，從 0 到 999999。

   2.4 版新加入.

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

int PyDateTime_TIME_GET_HOUR(PyDateTime_Time *o)

   回傳小時，為正整數，從 0 到 23。

   2.4 版新加入.

int PyDateTime_TIME_GET_MINUTE(PyDateTime_Time *o)

   回傳分鐘，為正整數，從 0 到 59。

   2.4 版新加入.

int PyDateTime_TIME_GET_SECOND(PyDateTime_Time *o)

   回傳秒，為正整數，從0 到59。

   2.4 版新加入.

int PyDateTime_TIME_GET_MICROSECOND(PyDateTime_Time *o)

   回傳微秒，為正整數，從 0 到 999999。

   2.4 版新加入.

Macros for the convenience of modules implementing the DB API:

PyObject* PyDateTime_FromTimestamp(PyObject *args)
    *Return value: New reference.*

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

   2.4 版新加入.

PyObject* PyDate_FromTimestamp(PyObject *args)
    *Return value: New reference.*

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

   2.4 版新加入.
