There was a problem confirming the ssl certificate

参考:https://blog.csdn.net/dou3516/article/details/111881479
使用pip install 某个包的时候报错ModuleNotFoundError: No module named ‘某个包’ ，错误原因是：

There was a problem confirming the ssl certificate: HTTPSConnectionPool(host=‘pypi.tuna.tsinghua.edu.cn’, port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate

此时需要获得 ssl证书的认证，需要在原来的安装命令后增加：-i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com （也可换其他源）

例如：

pip install scipy

改为：

pip install scipy -i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com

说明：这是阿里源 --trusted-host mirrors.aliyun.com 这是为了获得ssl证书的认证