如何在matplotlib中创建自定义发散色彩映射？

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LinearSegmentedColormap

def create_diverging_cmap(colors):
    cmap = LinearSegmentedColormap.from_list('diverging_cmap', colors)
    return cmap

colors = [(0, "#FF0000"),   # 红色
          (0.5, "#FFFFFF"), # 白色
          (1, "#0000FF")]   # 蓝色

data = np.random.randn(10, 10)  # 示例数据
cmap = create_diverging_cmap(colors)
plt.imshow(data, cmap=cmap)
plt.colorbar()
plt.show()