#$HOME/.pip/pip.conf

[global]

index-url = http://pypi.douban.com/simple

[install]

trusted-host = pypi.douban.com

或者

[global]

index-url = http://mirrors.aliyun.com/pypi/simple/

[install]

trusted-host=mirrors.aliyun.com

windows设置HOME变量，放到%HOME%/pip/pip.ini

单次使用 pip install Jinja2 -i http://pypi.douban.com/simple