class 'Exception', unable to use 'super' to call superclass initializer
Peter Hansen
peter at engcorp.com
Sat Sep 10 17:37:18 EDT 2005
chriss wrote:
> Hi,
>
> environment: Python 2.4, GNU/Linux, kernel 2.6.12.2
>
> having subclassed 'Exception' I'm trying to call the initialiser
> __init__(...) of the superclass Exception with 'super(..).__init__(..)' .
> However, trying to do so results in a
> 'TypeError: super() argument 1 must be type, not classobj'.
>
> Now, if I use 'Exception.__init__(..)' instad of super(..)... ,everything
> works just as one would expect.
>
> Why does 'super(..).__init__(..)' fail?
Exceptions do not inherit from 'object'; they are old-style classes.
super() can be used only with new-style classes (which subclass 'object').
-Peter
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