pycharm安装pip时Could not fetch URI https://pypi.python.org/simple/pip/: There was a problem

pycharm安装pip时Could not fetch URI https://pypi.python.org/simple/pip/: There was a problem 解决方案 step 01 step 02 step 03 此解决方法用于pycharm中的pip无法升级，提示 pycharm安装pip时Could not fetch URI 解决方案 step 01 使用pychar

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