C:\Users\zy>pip install pip -U
Looking in indexes: http://mirrors.aliyun.com/pypi/simple/
Collecting pip
? Downloading http://mirrors.aliyun.com/pypi/packages/4d/16/0a14ca596f30316efd412a60bdfac02a7259bf8673d4d917dc60b9a21812/pip-22.0.4-py3-none-any.whl (2.1 MB)
? ? ?|████████████████████████████████| 2.1 MB 819 kB/s
Installing collected packages: pip
? Attempting uninstall: pip
? ? Found existing installation: pip 20.2.4
? ? Uninstalling pip-20.2.4:
ERROR: Could not install packages due to an EnvironmentError: [WinError 5] 拒绝访问。: 'c:\\programdata\\anaconda3\\lib\\site-packages\\pip\\_internal\\build_env.py'
Consider using the `--user` option or check the permissions.
上面提示已经比较清楚了，运行命令时，加入? --user参数.??
C:\Users\zy>pip install pip -U --user
Looking in indexes: http://mirrors.aliyun.com/pypi/simple/
Collecting pip
Downloading http://mirrors.aliyun.com/pypi/packages/4d/16/0a14ca596f30316efd412a60bdfac02a7259bf8673d4d917dc60b9a21812/pip-22.0.4-py3-none-any.whl (2.1 MB)
|████████████████████████████████| 2.1 MB 547 kB/s
Installing collected packages: pip
WARNING: The scripts pip.exe, pip3.8.exe and pip3.exe are installed in 'C:\Users\zy\AppData\Roaming\Python\Python38\Scripts' which is not on PATH.
Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed pip-22.0.4
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