Always unsuccessful when used in Python python -m pip install --upgrade pip pip upgrade

Scenes

When using python -m pip install --upgrade pip pip be upgraded, every newspaper in the end is a lot of red, and ultimately unsuccessful upgrade.

 

 

achieve

Use the default image source for too long they would have no response, use watercress image upgrade.

python -m pip install --upgrade pip -i http://pypi.douban.com/simple --trusted-host pypi.douban.com