func_doc.py

#!/usr/bin/python
# Filename : func_doc.py
# Function : use DocStrings

def printMax(x,y):
	'''Prints  the maximum of two numbers.
	The two values must be integers.'''
	x = int(x)
	y = int(y)

	if x > y:
		print x,'is maximum'
	else:
		print y,'is maximum'

printMax(3,5)
print printMax.__doc__