Python Install 报错”‘SSLError(SSLCertVerificationError(1, ‘[SSL: CERTIFICATE_VERIFY

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问题描述

PS C:\temp> python -m pip install --upgrade pip

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1108)'))': /simple/pip/

WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1108)'))': /simple/pip/

WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1108)'))': /simple/pip/

WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1108)'))': /simple/pip/

ERROR: Operation cancelled by user

Could not fetch URL  https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1108)'))) - skipping

解决方案

1. 临时解决方案

信任 pip install 时候加入可选命令 --trusted-host pypi.org , 仅单次安装有效

信任官网链接: python -m pip install --upgrade pip --trusted-host pypi.org --trusted-host files.pythonhosted.org

临时使用镜像： pip install pillow -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com

建议使用下面的三种：
--trusted-host pypi.python.org
--trusted-host files.pythonhosted.org
--trusted-host pypi.org

2. 持久性解决方案

每次都输入那么长的指令是很难受的，下面说下windows电脑下解决方案
win+E 打开文件浏览器，在地址栏输入%APPDATA% 会打开roming文件夹，进入pip文件夹，如果没有就新建，新建pip.ini文件,输入下面内容文章来源地址https://www.toymoban.com/news/detail-530424.html

[global]
timeout = 6000
index-url=http://mirrors.aliyun.com/pypi/simple/

[install]
trusted-host = pypi.python.org
               pypi.org
               files.pythonhosted.org

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