Python: call constructor of the super class

• Option 1:

  
  class A(object):
   def __init__(self):
     print "world"
  
  class B(A):
   def __init__(self):
     print "hello"
     super(B, self).__init__()
  

• Option 2:

  
  class A: 
   def __init__(self): 
     print "world" 
  
  class B(A): 
   def __init__(self): 
     print "hello" 
     A.__init__(self)