windows下安装matplotlib

1，不知道为啥

py -3 -m pip install matplotlib

这样安装会报错/缺少freetype和png组件/最后也没解决问题/

解决方法：

https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyside

找到Matplotlib, a 2D plotting library.

安装matplotlib的必备组件：Requires numpy, dateutil, pytz, pyparsing, kiwisolver, cycler, setuptools, and optionally pillow, pycairo, tornado, wxpython, pyside, pyqt4, ghostscript, miktex, ffmpeg, mencoder, avconv, or imagemagick.

再下载相关的whl文件用pip安装即可！