printing class __dict__

[piyush.subscription at gmail.com]

hi,
i am a newbie. so bear wth me
i wrote a program like this
--
class H(object):
 def __init__( self):
  self.data =10
 def e ( self ):
  pass
 def f ( self ):
  pass

class H1(H):
    x2 = 11
    def __init__(self):
        self.x = 10

class details(object):
    def data(self,className):
        print classname.__dict__
        print classname.__name__
        print classname.__bases__

bc = details()
bc.data(H1)

when i run it, i get error like this
NameError: global name 'classname' is not defined

can't i pass 'class' like an 'object'?

any suggestions to access other classes details inside a class?