figure的学习
pyplot.figure(num=None, figsize=None, dpi=None, facecolor=None, edgecolor=None, frameon=True, FigureClass=<class ‘matplotlib.figure.Figure‘>, clear=False, **kwargs)
Python数据分析----Matplotlib
原文：https://www.cnblogs.com/BBS2013/p/12795683.html
