如下所示： import matplotlib.pyplot as plt import numpy as np x = np.arange(0., np.e, 0.01) y1 = np.exp(-x) y2 = np.log(x) fig = plt.figure() ax1 = fig.add_subplot(111) ax1.plot(x, y1,'r',label=right); ax1.legend(loc=1) ax1.set_ylabel('Y values for exp(-