pip install xxxx Could not fetch URL https://pypi.douban.com/simple/pip/

Could not fetch URL https://pypi.douban.com/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.douban.com', port=443):

 

vi  /root/.config/pip/pip.conf

[global]
index-url=http://mirrors.aliyun.com/pypi/simple/
[install]
trusted-host=mirrors.aliyun.com