1. Using python3 install xxx cannot download
Baidu to it may be a network problem, then use the following command
pip3 install pika -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
success:
Baidu to it may be a network problem, then use the following command
pip3 install pika -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
success: