python axes3d

`Axes3D` is a class in the `mpl_toolkits.mplot3d` module of Matplotlib library in Python. It is used to create a 3D plotting area for plotting 3D data in Matplotlib.

Here's an example of how to use it:

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
import numpy as np

# Create a figure and an Axes3D object
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# Generate some 3D data
x = np.random.normal(0, 1, 100)
y = np.random.normal(0, 1, 100)
z = np.random.normal(0, 1, 100)

# Plot the data
ax.scatter(x, y, z)

# Set labels for the axes
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')

# Show the plot
plt.show()

This code creates a 3D scatter plot with randomly generated data. The `Axes3D` object is created using the `projection='3d'` parameter, and the data is plotted using the `scatter()` method. The labels for the axes are set using the `set_xlabel()`, `set_ylabel()`, and `set_zlabel()` methods. Finally, the plot is displayed using the `show()` method.