class Foo(object):
  def __init__(self, frob, frotz):
    self.frobnicate = frob
    self.frotz = frotz

class Bar(Foo):
  def __init__(self, frob, frizzle):
    super(Bar,self).__init__(frob,34)
    self.frazzle = frizzle

new = Bar("hello","world")
print (new.frobnicate )
print (new.frazzle )
print (new.frotz )

>>>
hello
world
34