链接：
The Python Tutorial ： https://docs.python.org/3.6/tutorial/index.html
Documentation： https://docs.python.org/3.6/index.html
The Python Standard Library¶: https://docs.python.org/3.6/library/index.html
1. 升级pip
pip install --upgrade
2 安装PIL库
pip3 install pillow
3 numpy安装
pip install numpy
https://pypi.org/project/numpy/1.18.3/#files
4.matplotlib安装
pip install matplotlib
https://pypi.org/project/matplotlib/#files