Sort list of date strings

sort_dates.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from datetime import datetime

all_dates = ['09-2012', '04-2007', '11-2012', '05-2013', '12-2006', '05-2006', '08-2007']

sorted(all_dates, key=lambda x: datetime.strptime(x, '%m-%Y'))