ERROR: Cannot uninstall ‘PyYAML‘. It is a distutils installed project and thus we cannot...

具体错误:ERROR: Cannot uninstall 'PyYAML'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
原因:环境中已经存在某个版本的PyYAML,因此简单的pip指令并不能更新或者删除该包
解决方案:忽略已安装的PYYAML包,重新安装
指令:pip install PyYAML --ignore-installed
最终成功更新PyYAML到最新版本,结果如下图所示:
在这里插入图片描述

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