pip 更新报错——You should consider upgrading via the ‘python.exe

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pip 更新报错——You should consider upgrading via the ‘python.exe

1.pip更新之前都是：python -m pip install --upgrade pip 2.但今天一直提示有错误，试过输入：python -m pip install --upgrade pip -i pypi.douban/simple 3.也试过删除形如pip-21.0.3.dist-info的文件夹，再输入python -m pip install --upgrade pip也是报错

4.后面发现了一行关键的报错语句：

#大概意思是：没有执行安装包的权限 #可以在指令中添加--user 参数或者检查本地文件夹的相关权限设置 ERROR: Could not install packages due to an OSError: [WinError 5] 拒绝访问。: 'C:\\\\Python39\\\\Lib\\\\site-packages\\\\pip\\\\__init__.py' Consider using the `--user` option or check the permissions.

5.修改后尝试执行：pip install --user --upgrade pip 6.pip工具算是更新成功了，但这么多的警告我还是想弄掉 7.输入了：pip3 install pyinstaller -i pypi.tuna.tsinghua.edu/simple -U 8.关键报错在于：

note: This error originates from a subprocess, and is likely not a problem with pip. #此错误源于子流程，可能不是pip的问题。 error: legacy-install-failure #错误：旧版安装失败 × Encountered error while trying to install package. ╰─> future note: This is an issue with the package mentioned above, not pip. #注意：这是上述软件包的问题，而不是pip hint: See above for output from the failure.#提示：有关故障的输出，请参见上文。 WARNING: Ignoring invalid distribution -p (c:\\python39\\lib\\site-packages) WARNING: Ignoring invalid distribution -1p (c:\\python39\\lib\\site-packages) WARNING: Ignoring invalid distribution -p (c:\\python39\\lib\\site-packages) WARNING: Ignoring invalid distribution -0p (c:\\python39\\lib\\site-packages) WARNING: Ignoring invalid distribution -ip (c:\\python39\\lib\\site-packages) WARNING: Ignoring invalid distribution - (c:\\python39\\lib\\site-packages)

9.参考网上的办法，删除以前版本的包即可，原因可能是之前下载库的时候没有成功或者中途退出。到提示的目录site-packages下删除。删除c:\\python39\\lib\\site-packages目录下面的所有以波浪号开头的目录 10.终于正常了。 今天也是讨厌pip的一天

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