pip install 第三方包的時候總是報錯Could not fetch URL https://pypi.tuna.tsinghua.edu.cn/simple/pipenv/:

pip instal xxx 的時候總是報如下錯誤  Could not fetch URL https://pypi.tuna.tsinghua.edu.cn/simple/pipenv/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.tuna.tsinghua.edu.cn

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