Calcolo dei giorni lavorati durante l'A.S. 2015-16 per il Comune di Pesaro

calcolo-giorni-lavorati-as-2015-16.py

from datetime import date, timedelta
import calendar


def daterange(start, end, step=timedelta(days=1)):
    d = start
    while d <= end:
        yield d
        d += step


def is_holiday(day):
    if day.isoweekday() == 7:
        return True
    elif day in (
        date(2015, 9, 24),
        date(2015, 11, 1),
        date(2015, 11, 2),
        date(2015, 12, 7),
        date(2015, 12, 8),
    ) + tuple(
        daterange(date(2015, 12, 24), date(2016, 1, 6))
    ) + tuple(
        daterange(date(2016, 3, 24), date(2016, 3, 29))
    ) + (
        date(2016, 3, 30), date(2016, 4, 25), date(2016, 5, 1),
        date(2016, 6, 2),
    ):
        return True
    else:
        return False


def is_workday(day):
    if day == date(2015, 9, 14):
        return True
    elif all([
        day >= date(2015, 9, 14),
        day <= date(2015, 10, 6),
    ]):
        return calendar.weekday(day.year, day.month, day.day) in (
            calendar.WEDNESDAY, calendar.THURSDAY, calendar.FRIDAY
        )
    elif all([
        day > date(2015, 10, 6),
        day < date(2016, 1, 11),
    ]):
        return calendar.weekday(day.year, day.month, day.day) in (
            calendar.MONDAY, calendar.TUESDAY, calendar.WEDNESDAY,
            calendar.THURSDAY,
        )
    elif all([
        day >= date(2016, 1, 11),
        day <= date(2016, 6, 4),
    ]):
        return calendar.weekday(day.year, day.month, day.day) in (
            calendar.TUESDAY, calendar.WEDNESDAY, calendar.THURSDAY,
            calendar.FRIDAY
        )
    else:
        return False


def dump_summary(start_day, end_day):
    days = [
        d for d in daterange(start_day, end_day)
        if not is_holiday(d) and is_workday(d)
    ]
    print("Giorni lavorativi: {}.".format(len(days)))
    print("Elenco:")
    for d in days:
        print("- {:%a %d %b %y}".format(d))


start_day = date(2015, 9, 1)
end_day = date(2016, 6, 4)

dump_summary(start_day, end_day)