在 Python 中查找一个月的最后一个营业日或工作日

import calendar
def last_business_day_in_month(year: int, month: int) -> int:
    return max(calendar.monthcalendar(year, month)[-1:][0][:5])
print(last_business_day_in_month(2021, 1))
print(last_business_day_in_month(2021, 2))
print(last_business_day_in_month(2021, 3))
print(last_business_day_in_month(2021, 4))
print(last_business_day_in_month(2021, 5))

Output:

29
26
31
30
31