python默认没有shutil模块->安装
1安装pipinstall
sh-3.2# curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py sh-3.2# python get-pip.py
2 pip install shutil
sh-3.2# pip install shutil
3 over
*4或者直接
sh-3.2# easy_install shutil
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