object oriented inheritance problem

Matthew Thorley ruach at chpc.utah.edu
Tue May 10 13:12:05 EDT 2005


So is elementtree a module of modules? I didn't know you could do that.
I just assumed that from elementtree import ElementTree imported a class
from the module elementtree.

It works now. Thanks guys.

Fredrik Lundh wrote:
> Matthew Thorley wrote:
> 
> 
>>I am trying to inherit from ElementTree so I can add some methods. This
>>is the code I am trying to make work, and the following is the error I
>>am getting.
>>
>>from elementtree import ElementTree
>>class AcidTree(ElementTree):
>>    def write_string(self):
>>        ....
>>
>>File "/home/hope/var/proj/acid/server/mgacparse.py", line 22, in ?
>>    class AcidTree(ElementTree):
>>TypeError: Error when calling the metaclass bases
>>    module.__init__() takes at most 2 arguments (3 given)
>>
>>I have *no* idea what is going on here.
> 
> 
> note that you're trying to inherit from a module.  the error message could
> need some work...
> 
> something like
> 
>     from elementtree.ElementTree import ElementTree, tostring
> 
>     class AcidTree(ElementTree):
>         def write_string(self):
>             return tostring(self)
> 
> should work better.
> 
> </F>
> 
> 
> 



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