Since the default source python is abroad, so the download time will be very slow, and even download a timeout failure occurs, provide two solutions
1. Set the timeout limit pip
Open cmd
Input pip --default-timeout = 100 install -U [here] is downloaded to the package name (in pandas example)
If the speed is very slow
Direct source exchange download
1. pip install -i https://pypi.tuna.tsinghua.edu.cn/simple -U funcat
This means that the command specified in https://pypi.tuna.tsinghua.edu.cn/simple download funcat website package
Explain the above and -i -U
-U: install the upgrade
-i: Specifies the source
This may refer to the article published by several bloggers,
About Source: https://www.cnblogs.com/ywf520/p/11600929.html
Timeout solve: https://www.cnblogs.com/xiaoduc-org/p/5958973.html