import numpy as np
import matplotlib.pyplot as plt
np.random.seed(123)
x1 = np.random.randn(30)
y1 = np.random.randn(30)
np.random.seed(3)
x2= np.random.randn(30)
y2 = np.random.randn(30)
fig = plt.figure()
fig.patch.set_facecolor('FloralWhite')
ax = plt.axes()
ax.set_facecolor("FloralWhite")
plt.scatter(x1, y1,c=["r"])
plt.scatter(x2,y2,c=["b"])
plt.show()结果:

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