Matplotlib.figure.Figure.set_canvas() in Python

# Implementation of matplotlib function
import matplotlib.pyplot as plt
def new_figure(): 
    fig = plt.figure()
    plt.plot([0, 1], [2, 3])
    plt.close(fig)
    return fig
def show_figure(fig):
    dummy = plt.figure()
    new_manager = dummy.canvas.manager
    new_manager.canvas.figure = fig
    fig.set_canvas(new_manager.canvas)
fig = new_figure()
show_figure(fig)
fig.suptitle("""matplotlib.figure.Figure.set_canvas()
function Example\n\n""", fontweight ="bold")    
plt.show()

# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
 
x = np.arange(16)
y = np.sin(x / 3)
 
fig, ax = plt.subplots()
 
ax.step(x, y + 2, color ='green')
ax.plot(x, y + 2, 'o--', color ='black', alpha = 0.3)
def show_figure(fig):
    dummy = plt.figure()
    new_manager = dummy.canvas.manager
    new_manager.canvas.figure = fig
    fig.set_canvas(new_manager.canvas)
show_figure(fig)
fig.suptitle("""matplotlib.figure.Figure.set_canvas()
function Example\n\n""", fontweight ="bold")    
plt.show()