Truth Value Testing in Python

#python Program 
#The class Prep has no __bool__ method, so default value of it is True
class Prep: 
   def __init__(self):
      print('This is class Prep')
        
p_obj = Prep()
if p_obj:
   print('It is True')
else:
   print('It is False')
#The class Insta has __bool__ method, which is returning false value    
class Insta: 
   def __init__(self):
      print('This is class Insta')
        
   def __bool__(self):
      return False
I_obj = Insta()
if I_obj:
   print('It is True')
else:
   print('It is False')
Tupl = (4,7, 8,41) # Some elements are available, so it returns True
if Tupl:
   print('Not Empty')
else:
   print('Empty')
lis = [] # No element is available, so it returns False
if lis:
   print('Not Empty')
else:
   print('Empty')