解决PIP安装第三方库报错SSL: CERTIFICATE_VERIFY_FAILED问题

PIP安装第三方库报错SSL: CERTIFICATE_VERIFY_FAILED

今天在安装一个第三方库时报错：

如下错误

pip install --upgrade baostock
 
Could not fetch URL https://pypi.org/simple/baostock/: There was a problem confi
 
rming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max r
 
etries exceeded with url: /simple/baostock/ (Caused by SSLError(SSLCertVerificat
 
ionError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self si
gned certificate in certificate chain (_ssl.c:1045)'))) - skipping

当前python版本是3.7，网上查找说是python高版本需要验证ssl，可以添加--trusted-host domain来解决

于是赶紧尝试一下

pip install --trusted-host pypi.org --upgrade baostock

又报如下错误：

Could not install packages due to an EnvironmentError: HTTPSConnectionPool(host=
 
'files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/57
 
/f8/e909079851f6ea6685bb63ea143c66a0f4141fc3ce17e728ec908819ed54/baostock-0.8.5-
 
py3-none-any.whl (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFIC
ATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certifi
cate chain (_ssl.c:1045)')))

原来是另一个域名files.pythonhosted.org也是https的，也需要指定为trusted-host才可以

问题是同时指定两个域名为trusted-host该怎么写呢？

网上找了半天没找到，经过自己一番摸索，发现如下的写法可以

解决问题

pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org  --upgrade  baostock

总结

如果是两个以上的域名以此类推，贡献给大家。

希望能给大家一个参考，也希望大家多多支持脚本之家。