matplotlib.pyplot 全局设置

import matplotlib.pyplot as plt
plt.rcParams['figure.figsize'] = (3.9, plt.rcParams['figure.figsize'][1] * 3.9 / plt.rcParams['figure.figsize'][0])# 显示图像的最大范围
plt.rcParams['font.sans-serif'] = 'Arial' #或者 plt.rcParams['font.family'] = 'Arial'
plt.text(-0.1, 0.95, '(a)', transform=plt.gca().transAxes, fontsize=20)