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

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

    The two values must be integers.'''
    x = int(x) # convert to integers, if possible
    y = int(y)

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

printMax(3, 5)
print printMax.__doc__

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$ python func_doc.py
5 is maximum
Prints the maximum of two numbers.

        The two values must be integers.

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5 is maximum

Traceback (most recent call last):
  File "D:\Python25\func_doc.py", line 16, in 
    print printMax._doc_
AttributeError: 'function' object has no attribute '_doc_'

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