解决pycharm 无法加载pip安装包报错：python packing tools not found. install packing tools

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1. Linux下打开　/opt/pycharm-xxxxx/helpers/packaging_tool.py
   windows下打开　C:\Program Files\JetBrains\PyCharm 2017.1.1\helpers\packaging_tool.py
2. 找到下方代码：

def do_install(pkgs):
    try:
        import pip
    except ImportError:
        error_no_pip()
    return pip.main(['install'] + pkgs)

def do_uninstall(pkgs):
   try:
        import pip
    except ImportError:
        error_no_pip()
    return pip.main(['uninstall', '-y'] + pkgs)

3. 修改为：

def do_install(pkgs):
    try: 
        from pip._internal import main 
    except Exception: 
        from pip import main 
    except ImportError: 
        error_no_pip()
    return main(['install'] + pkgs)

def do_uninstall(pkgs): 
    try: 
        from pip._internal import main 
    except Exception: 
        from pip import main 
    except ImportError: 
        error_no_pip() 
    return main(['uninstall', '-y'] + pkgs)

4. 此时打开pycharm 就能加载到pip安装包了。