python环境部署:pip升级命令错误的解决方案

pip出现升级提醒

You are using pip version 10.0.1, however version 21.1.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

按照提醒命令行升级出现错误

python -m pip install --upgrade pip

错误提示：AttributeError: 'NoneType' object has no attribute 'bytes'

强制升级解决方案

>python -m pip install -U --force-reinstall pip

查看安装列表

pip list

lockdatav Done!