Polar Axis
For a demonstration of a line plot on a polar axis, see Figure 1.
import numpy as np
import matplotlib.pyplot as plt
r = np.arange(0, 2, 0.01)
theta = 2 * np.pi * r
fig, ax = plt.subplots(subplot_kw={'projection': 'polar'})
ax.plot(theta, r)
ax.set_rticks([0.5, 1, 1.5, 2])
ax.grid(True)
plt.show()

Conseil
Helpful advice for doing things better or more easily.
Note that there are five types of callouts, including:
note, warning, important, tip, and caution.