Python: get the last Monday of July 2010

Question

How do I get the last Monday (or another day) of a given month?

Answer 1

Using the calendar module from stdlib:

import calendar cal = calendar.Calendar(0) month = cal.monthdatescalendar(2010, 7) lastweek = month[-1] monday = lastweek[0] print(monday) 2010-07-26 

Answer 2

Check out dateutil :

 from datetime import datetime from dateutil import relativedelta datetime(2010,7,1) + relativedelta.relativedelta(day=31, weekday=relativedelta.MO(-1)) 

returns

 datetime.datetime(2010, 7, 26, 0, 0) 

Answer 3

Based on Gary's answer :

 import calendar month = calendar.monthcalendar(2010, 7) mondays = [week[0] for week in month if week[0]>0] print mondays[-1] 26 

This works to get the last Sunday of the month, even if there is no Sunday in the last week of the month.

Answer 4

A slight improvement in the answer to manu!

 import calendar month = calendar.monthcalendar(2010, 7) day_of_month = max(month[-1][calendar.SUNDAY], month[-2][calendar.SUNDAY]) print day_of_month