@@ -0,0 +1,1609 @@
+#!/usr/bin/env python%0A# -*- encoding: utf-8 -*-%0A#%0A# Copyright (c) 2014 ASMlover. All rights reserved.%0A#%0A# Redistribution and use in source and binary forms, with or without%0A# modification, are permitted provided that the following conditions%0A# are met:%0A#%0A#  * Redistributions of source code must retain the above copyright%0A#    notice, this list ofconditions and the following disclaimer.%0A#%0A#  * Redistributions in binary form must reproduce the above copyright%0A#    notice, this list of conditions and the following disclaimer in%0A#    the documentation and/or other materialsprovided with the%0A#    distribution.%0A#%0A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS%0A# %22AS IS%22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT%0A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS%0A# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE%0A# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,%0A# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,%0A# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;%0A# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER%0A# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT%0A# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN%0A# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE%0A# POSSIBILITY OF SUCH DAMAGE.%0A%0A%0Adef square(x):%0A  ''' Squares a number and returns the result.%0A  %0A  %3E%3E%3E square(2)%0A  4%0A%0A  %3E%3E%3E square(3)%0A  9%0A  '''%0A  return x * x%0A%0A%0A%0A%0A%0Aif __name__ == '__main__':%0A  import doctest, my_math%0A  doctest.testmod(my_math)%0A

add test demo for using doctest