please help me get this to run in python 2.4

datetime.py

Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49) 
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime
>>> month_begin_date = '201104'
>>> friendly_date = datetime.datetime.strptime(month_begin_date,'%Y%m').strftime('%B, %Y')
>>> print friendly_date
April, 2011
>>> 

minimus% python2.4 friendly.py
April, 2011
minimus% python2.5 friendly.py
April, 2011
minimus% python2.6 friendly.py
April, 2011
minimus% python2.7 friendly.py
April, 2011
minimus% cat friendly.py
import datetime
import time
month_begin_date = '201104'
time_obj = time.strptime(month_begin_date, '%Y%m')
friendly_date = time.strftime('%B, %Y', time_obj)
print friendly_date
minimus%

(And, yes, they are separate installs)

minimus% python2.4 -V
Python 2.4.5
minimus% python2.5 -V
Python 2.5.5
minimus% python2.6 -V
Python 2.6.6
minimus% python2.7 -V
Python 2.7.1
minimus%