PIP installs the Python library using domestic mirrored resources to speed up the download process

Pip default installation package is downloaded from the website https://pypi.org/simple, we can change it to a domestic mirror site, speed up the download process, the following to install the NumPy library as an example:

Pip Install-i https://pypi.tuna.tsinghua.edu.cn/simple NumPy

When downloading other libraries, change the numpy to the desired library name. (use Pip, PIP2, or PIP3 to determine the Python version you are pointing to.) ）

Enter Pip Install-help in the terminal to discover the role of the parameter "-I":

Package Index Options:  -I,--index-url <url>       Base URL of the Python package index (default                              https:// Pypi.org/simple).  This should                              -a repository compliant with PEP 503 (the Simple                              repository API) or a local directory laid out In the                              same format.

PIP installs the Python library using domestic mirrored resources to speed up the download process