Matplotlib.figure.Figure.show() in Python

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
 
fig = plt.figure()
x = np.arange(20) / 50
y = (x + 0.1)*2
 
val1 = [True, False] * 10
val2 = [False, True] * 10
 
plt.errorbar(x, y, 
             xerr = 0.1,
             xlolims = True,
             label ='Line 1')
y = (x + 0.3)*3
 
plt.errorbar(x + 0.6, y,
             xerr = 0.1,
             xuplims = val1,
             xlolims = val2,
             label ='Line 2')
 
y = (x + 0.6)*4
plt.errorbar(x + 1.2, y,
             xerr = 0.1,
             xuplims = True,
             label ='Line 3')
 
plt.legend()
fig.suptitle("""matplotlib.figure.Figure.show()
function Example\n\n""", fontweight ="bold") 
fig.show() 

# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
 
x = np.linspace(0, 10, 500)
y = np.sin(x**2)+np.cos(x)
 
fig, ax = plt.subplots()
 
ax.plot(x, y, label ='Line 1')
 
ax.plot(x, y - 0.6, label ='Line 2')
 
ax.legend()
fig.suptitle("""matplotlib.figure.Figure.show()
function Example\n\n""", fontweight ="bold") 
fig.show()