常见问题

1、执行pip install -–upgrade pip报错：ERROR: Could not install packages due to an OSError: [WinError 5] 拒绝访问。

执行以下代码即可：

pip install --user --upgrade pip

2、WARNING: The script wheel.exe is installed in 'C:\Users\{User}\AppData\Roaming\Python\Python39\Scripts' which is not on PATH.。

将C:\Users\{User}\AppData\Roaming\Python\Python39\Scripts\添加到环境变量中即可。