"Guido van Rossum" <[EMAIL PROTECTED]> writes:

>> for the same reason one should always incref B before decrefing A in
>>
>>     A = B
>>
>> ...
>
> That reason that A and B might already be the same object, right?

Or B might be a subobject of A, not referenced elsewhere.

-- 
   __("<         Marcin Kowalczyk
   \__/       [EMAIL PROTECTED]
    ^^     http://qrnik.knm.org.pl/~qrczak/
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