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pythondate

Get the last day of the month

Is there a way using Python's standard library to easily determine (i.e. one function call) the last day of a given month?

If the standard library doesn't support that, does the dateutil package support this?

Solution

  • calendar.monthrange provides this information:

    calendar.monthrange(year, month)
        Returns weekday of first day of the month and number of days in month, for the specified year and month.

    >>> import calendar
>>> calendar.monthrange(2002, 1)
(1, 31)
>>> calendar.monthrange(2008, 2)  # leap years are handled correctly
(4, 29)
>>> calendar.monthrange(2100, 2)  # years divisible by 100 but not 400 aren't leap years
(0, 28)

    so:

    calendar.monthrange(year, month)[1]

    seems like the simplest way to go.