datetime_convertion.py

# http://snipplr.com/view/19446/datetime-string-conversion/
import datetime
d=datetime.datetime.now()

# datetime to string
print d.strftime("%d/%m/%Y %H:%M:%S")

# string to datetime
print d.strptime("14/11/1970 12:03:30","%d/%m/%Y %H:%M:%S")

"""
%a Locale's abbreviated weekday name.  
%A Locale's full weekday name.  
%b Locale's abbreviated month name.  
%B Locale's full month name.  
%c Locale's appropriate date and time representation.  
%d Day of the month as a decimal number [01,31].  
%H Hour (24-hour clock) as a decimal number [00,23].  
%I Hour (12-hour clock) as a decimal number [01,12].  
%j Day of the year as a decimal number [001,366].  
%m Month as a decimal number [01,12].  
%M Minute as a decimal number [00,59].  
%p Locale's equivalent of either AM or PM. (1) 
%S Second as a decimal number [00,61]. (2) 
%U Week number of the year (Sunday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Sunday are considered to be in week 0. (3) 
%w Weekday as a decimal number [0(Sunday),6].  
%W Week number of the year (Monday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Monday are considered to be in week 0. (3) 
%x Locale's appropriate date representation.  
%X Locale's appropriate time representation.  
%y Year without century as a decimal number [00,99].  
%Y Year with century as a decimal number.  
%Z Time zone name (no characters if no time zone exists).  
% A literal "%" character. 
"""