import matplotlib.pyplot as plt
import numpy as np

plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True

fig = plt.figure()

ax = fig.add_subplot(111, projection='3d')

# 散点图
ax.scatter(np.random.rand(10), np.random.rand(10), np.random.rand(10), c=np.random.rand(10),
   cmap='hot', picker=5, s=100)


# pick_event_method
def pick_event_method(event):
   ind = event.ind[0]
   x, y, z = event.artist._offsets3d
   print(x[ind], y[ind], z[ind])


# Connect pick_event_method with pick_event
fig.canvas.mpl_connect('pick_event', pick_event_method)

plt.show()

0.29471404722373373 0.7272382336952506 0.551701540876738
0.7393059098968329 0.880733225356321 0.20733995579556608
0.4055966753557102 0.9709122739514328 0.10116103589732084
0.2781962334047674 0.48531626106129566 0.8573607199598575