Python：（使用matplotlib画图）次坐标轴，两个坐标轴

    代码如下 import matplotlib.pyplot as plt import numpy as np x = np.arange(0,10,0.1) y1 = 0.05 * x**2 y2 = -1 * y1 fig, ax1 = plt.subplots() ax2 = ax1.twinx() ax1.plot(x,y1,'g-') ax2.plot(x,y2,'b-')

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