Code
+import numpy as np
+import matplotlib.pyplot as plt
+
+= np.arange(0, 2, 0.01)
+ r = 2 * np.pi * r
+ theta = plt.subplots(
+ fig, ax = {'projection': 'polar'}
+ subplot_kw
+ )"#fcfcfc")
+ fig.patch.set_facecolor("#fcfcfc")
+ ax.set_facecolor(
+ ax.plot(theta, r)0.5, 1, 1.5, 2])
+ ax.set_rticks([True)
+ ax.grid( plt.show()