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1.根据字符串来导入模块。
2.根据模块来使用函数。
>>> module_name=‘sys‘ >>> mo=__import__(module_name) >>> mo <module ‘sys‘ (built-in)> >>> print mo.path [‘‘, ‘/usr/lib/python2.7‘, ‘/usr/lib/python2.7/plat-x86_64-linux-gnu‘, ‘/usr/lib/python2.7/lib-tk‘, ‘/usr/lib/python2.7/lib-old‘, ‘/usr/lib/python2.7/lib-dynload‘, ‘/usr/local/lib/python2.7/dist-packages‘, ‘/usr/lib/python2.7/dist-packages‘, ‘/usr/lib/python2.7/dist-packages/PILcompat‘, ‘/usr/lib/python2.7/dist-packages/gtk-2.0‘, ‘/usr/lib/python2.7/dist-packages/ubuntu-sso-client‘]
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原文地址：http://www.cnblogs.com/caizhenzhen/p/5104094.html
