python 文件的后缀为.py,比如 name.py
python 文件可以直接执行，也可以被导入、调用，比如import name;
script 1:
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#!/bin/python# Filename:name.pyif __name__==‘__main__‘: print ‘This program is being run by itself‘else: print ‘I am being imported from another module‘ |
script 2:
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#!/bin/python# filename:test.pyimport name; |
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执行 test.py返回C:\Python27\python.exe C:/Users/Administrator/PycharmProjects/11/test.pyI am being imported from another moduleProcess finished with exit code 0 |
结论：
__name__==‘__main__‘ 代表直接执行
如果被当作模块导入到其他python文件中，执行else 后面的命令
一般我们在调试的时候会用到
原文：http://www.cnblogs.com/tmdba/p/6381996.html