Python: get last Monday of July 2010

Question

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

Answer 1

Have a look at 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 2

Using the calendar module from the stdlib:

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

2010-07-26