_dateparser.py 文件源码

def gregorian_valid(date_tuple):
    """ Checks if date_tuple is a valid date in Gregorian Calendar  """
    day = date_tuple[0]
    month = date_tuple[1]
    valid = True
    try:
        if month > 12:
            valid = False
        elif calendar.isleap(date_tuple[2]):
            if day > _leap_days[month-1]:
                valid = False
        elif day > _max_days[month-1]:
            valid = False
    except:
        valid = False
    return valid