pip软件安装报错 WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘SSLError(SSLCertVerificationError(1, ‘[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)’))’: /simple/pyopenssl/ Could not fetch URL https://pypi.org/simple/pyopenssl/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host=‘pypi.org’, port=443): Max retries exceeded with url: /simple/pyopenssl/ (Caused by SSLError(SSLCertVerificationError(1, ‘[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)’))) - skipping ERROR: Could not find a version that satisfies the requirement pyopenssl (from versions: none) ERROR: No matching distribution found for pyopenssl

解决方法： 参考https://www.cnblogs.com/shimmernight/p/13441760.html https://www.cnblogs.com/aimed/p/10178048.html

1.将pip源调整为国内的源 pip install ssl -i http://mirrors.aliyun.com/pypi/simple —trusted-host mirrors.aliyun.com

2.永久修改pip源，可按照如下操作： Windows： 1.找到系统盘下C:\Users\用户名\AppData\Roaming

2.查看在Roaming文件夹下有没有一个pip文件夹，如果没有创建一个；

3.进入pip文件夹，创建一个pip.ini文件；

4.使用记事本的方式打开pip.ini文件，写入:

[global] index-url = http://mirrors.aliyun.com/pypi/simple # 指定下载源 trusted-host = mirrors.aliyun.com # 指定域名

Linux: