Help with super()

[Christopher J. Bottaro]

Why don't this code work?

import PRI

class Poscdnld_PYIO(PRI.BasicBatch):
   
   def __init__(self, *argv):
      super(Poscdnld_PYIO, self).__init__(*argv)

x = Poscdnld_PYIO()

I get this exception:
File "poscdnld_pyio.py", line 52, in __init__
    super(Poscdnld_PYIO, self).__init__(*argv)
TypeError: super() argument 1 must be type, not classobj

What am I doing wrong?  Thanks.