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错误信息：

pip install pandas 安装失败：

AttributeError: module ‘pip’ has no attribute ‘main’

解决办法：

/Applications/PyCharm.app/Contents/helpers/packaging_tool.py

修改do_install和do_uninstall

原来：
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)

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

错误信息：

You are using pip version 10.0.1, however version 18.0 is available. You should consider upgrading via the ‘pip install –upgrade pip’ command.

解决办法：

运行命令：python -m pip install –upgrade pip