text: # class A:
  # 	def __init__(self):
  # 		print "enter A"
  # 		print "leave A"
  
  
  # class B(A):
  # 	def __init__(self):
  # 			print "enter B"
  # 			A.__init__(self)
  # 			print "leave B"
  class A(object):
  	def __init__(self):
  		print "enter A"
  		print "leave A"
  
  
  class C(object):
  	def __init__(self):
  		print "enter C"
  		print "leave C"
  
  
  class B(C):
  	def __init__(self):
  		print "enter B"
  		# A.__init__(self)
  		super(B, self).__init__()
  		print "leave B"
  
  
  b = B()
  