pip安装插件报错。

报错：

Cannot unpack file C:WindowsTEMPpip-unpack-4mbfczpjsimple (downloaded from C:WindowsTEMPpip-req-build-66uynkdi, content-type: text/html; charset=utf-8); cannot detect
archive format
Cannot determine archive format of C:WindowsTEMPpip-req-build-66uynkdi

解决：

   换源

pip install --extra-index-url http://mirrors.aliyun.com/pypi/simple/ config 
或者使用清华源  https://pypi.tuna.tsinghua.edu.cn/simple