[Python-Dev] Proposal to revert r54204 (splitext change)

"Martin v. Löwis" martin at v.loewis.de
Fri Mar 16 20:51:07 CET 2007

Mike Krell schrieb:
> On 3/16/07, "Martin v. Löwis" <martin at v.loewis.de> wrote:
>> If they pass the flag to the function, the code will stop running on
>> 2.5 and earlier. This is worse than having code that works on all
>> versions. This is also whz I wondered how the flag helps backwards
>> compatibility: when people add the flag, the code stops working
>> on old versions, so it will *not* be backwards compatible.
> I don't understand.  Under Nick's proposal, calling splitext with no
> keyword parameters results in the exact behavior we have today, so
> it's obviously backward compatible.  If you use a keyword parameter,
> you're using a new feature implemented in 2.6, so there is no
> expectation of backward compatibility unless and until the keyword
> parameters are backported.

Assuming the current behavior is a bug (which I still believe to be
the case), in order to actually make use of the bug fix, you have to
pass the parameter. This will make your code break on old versions.


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