def set_time_range(self, start, end):
self.set_start_datetime(start)<EOL>self.set_end_datetime(end)<EOL>
:param datetime.datetime/str start: |param_start_datetime|
:param datetime.datetime/str end: |param_end_datetime|

:Sample Code:
    .. code:: python

        from datetimerange import DateTimeRange
        time_range = DateTimeRange()
        print(time_range)
        time_range.set_time_range("2015-03-22T10:00:00+0900", "2015-03-22T10:10:00+0900")
        print(time_range)
:Output:
    .. parsed-literal::

        NaT - NaT
        2015-03-22T10:00:00+0900 - 2015-03-22T10:10:00+0900