We can use matplotlib.rcParams['backend'] to override the backend value.
Steps
Using get_backend() method, return the name of the current backend, i.e., default name.
Now override the backend name.
Using get_backend() method, return the name of the current backend, i.e., updated name.
Example
import matplotlib
print("Before, Backend used by matplotlib is: ", matplotlib.get_backend())
matplotlib.rcParams['backend'] = 'TkAgg'
print("After, Backend used by matplotlib is: ", matplotlib.get_backend())Output
Before, Backend used by matplotlib is: GTK3Agg After, Backend used by matplotlib is: TkAgg