Importing Self

[Salim Zayat]

Hey there. I am running into a weird sort of problem.  I had two 
versions of the same tree-drawing code, a module to be used by another 
program.  I made some corrections to the second.  Now, for some reason, 
it is getting hung up in some stupid error.  
I made a class named Error in my file.  In the first version, I can 
merely say :

isinstance(e, Error)

and it executes the statement fine.  However when I try the same in the 
second file, I get an Exception.  But, when I import the module itself, 
then say:

isinstance(path.filename.Error)

it works fine.  Why is this?  What are these sort of problems indicituve of?

Salim