I would have changed the following two lines, that way, you don't have to know what the last day of the month is. end_date = datetime(2023, 7, 1) # ...

I would have changed the following two lines, that way, you don't have to know what the last day of the month is. end_date = datetime(2023, 7, 1) # ... while current_date < end_date: This is a lot shorter though maybe harder to read: >>> import calendar >>> c = calendar.Calendar() >>> sum(d > 0 and calendar.MONDAY <= w <= calendar.FRIDAY for d, w in c.itermonthdays2(2023, 6)) 22 https://docs.python.org/3/library/calendar.html#calendar.Calendar.itermonthdays2 https://docs.python.org/3/library/calendar.html#calendar.Cal...