Python DocString特性

#!/usr/bin/python
#Filename:func_doc.py

def printMax(x,y):
'''Prints the maximum of two numbers

the two valuse 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__