Re: [Jython-users] String Object id question

[Jim A. <ji...@tr...>]

"Robert W. Bill" wrote:
> 
> Hi all,
> 
> I've ran into a bit of confusion with the id() of characters in
> Jython compared with Python.  Here's something similar to the code
> that started the confusion:
> 
> ----------------------------------------------------------
> S = "abc"
> L = ["a", "b", "c"]
> LoL = [L, L, L]
> stringtest = S[1]
> listtest = L[1]
> loltest = LoL[1]
> 
> def test(obj1, obj2):
>     if ( id(obj1) != id(obj2) ):
>         return 0
> 
> assert(test(loltest, LoL[1])), "List-of-lists test failed"
> assert(test(listtest, L[1])), "List test failed"
> assert(test(stringtest, S[1])), "String test failed"
> ----------------------------------------------------------
> 
> In CPython, all passes, but in Jython, there's always an AE:
> String test failed.  Is this expected? unavoidable?

When I cut/paste this code directly into a file and run it, it fails on
the first line. Doesn't the 'test' need a 'else' part? I'm new to Python
but using Jython in a new project so correct me if I'm wrong...

I used this instead:

 def test(obj1, obj2):
     if ( id(obj1) != id(obj2) ):
         return 0
     else:
         return 1

And my version (2.1a1) passes ALL the tests.

Am I missing something?


-- 
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Jim Adrig                      _ \<,_
ji...@tr...          ' `/ ' `
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