在python中向多个子图添加单个颜色条

import matplotlib.pyplot as plt
import numpy as np

fig, axs = plt.subplots(2, 2)  # 创建2x2的子图布局
x = np.linspace(0, 2 * np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
y3 = np.tan(x)
y4 = np.exp(x)

axs[0, 0].plot(x, y1)
axs[0, 1].plot(x, y2)
axs[1, 0].plot(x, y3)
axs[1, 1].plot(x, y4)

cax = fig.add_axes([0.92, 0.1, 0.02, 0.8])  # 创建颜色条的位置和大小
plt.colorbar(cax=cax)

plt.show()