the-most-frequent-weekdays.py 文件源码

def most_frequent_days(year):
    """
        List of most frequent days of the week in the given year
    """

    firstweek = set(range(datetime(year, 1, 1).weekday(), 7))   # weekday 0..6
    lastweek = set(range(datetime(year, 12, 31).isoweekday()))  # isoweekday 1..7
    return [day_name[day] for day in sorted((firstweek & lastweek) or (firstweek | lastweek))]