文件操作 - __init__.py
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文件: /opt/alt/python35/lib/python3.5/site-packages/pip/_vendor/distlib/_backport/__init__.py
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"""Modules copied from Python 3 standard libraries, for internal use only. Individual classes and functions are found in d2._backport.misc. Intended usage is to always import things missing from 3.1 from that module: the built-in/stdlib objects will be used if found. """
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