pip安装报错：There was a problem confirming the ssl certificate

我在卸载Anaconda后，通过cmd命令终端 pip install ***时会有SSL报错如下：

Could not fetch URL https://pypi.org/simple/yacs/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/yacs/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1076)'))) - skipping

是因为我在安装Anaconda后配置环境变量时，在path中只配置了以下变量

C:\ProgramData\Anaconda3
C:\ProgramData\Anaconda3\Scripts

还需要将以下变量加入系统变量 path

C:\ProgramData\Anaconda3\Library\bin

配置完成后，最重要的是要 重启系统，然后再使用pip命令安装包时即可

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