Function monthrange

Lib/calendar.py:186–192

Return weekday of first day of month (0-6 ~ Mon-Sun) and number of days (28-31) for year, month.

(year, month)

        raise IllegalMonthError(month)

def monthrange(year, month):
    """Return weekday of first day of month (0-6 ~ Mon-Sun)
       and number of days (28-31) for year, month."""
    _validate_month(month)
    day1 = weekday(year, month, 1)
    ndays = mdays[month] + (month == FEBRUARY and isleap(year))
    return day1, ndays


def _monthlen(year, month):