Help with super()

Steven Bethard steven.bethard at gmail.com
Mon Dec 6 23:34:22 CET 2004


Christopher J. Bottaro wrote:
> 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.
> 

I don't know what PRI is, but I suspect that PRI.BasicBatch is a classic 
class, not a new-style class.  The super function only works for 
new-style classes:

 >>> class C:
...     def __init__(self):
...         super(C, self).__init__()
...
 >>> c = C()
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
   File "<interactive input>", line 3, in __init__
TypeError: super() argument 1 must be type, not classobj
 >>> class C(object):
...     def __init__(self):
...         super(C, self).__init__()
...
 >>> c = C()
 >>>



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