On Mar 25, 2014, at 1:16 PM, Guido van Rossum <gu...@python.org> wrote:

> On Tue, Mar 25, 2014 at 9:46 AM, Donald Stufft <don...@stufft.io> wrote:
> 
> On Mar 25, 2014, at 12:35 PM, Guido van Rossum <gu...@python.org> wrote:
> [...]
>> 
>> I do note that the PEP seems to have some weasel-words about breaking 
>> backward compatibility in the name of security. The phrase "This PEP does 
>> not grant Python 2.7 any general exemptions to the usual backwards 
>> compatibility policy for maintenance releases" *could* be interpreted to 
>> imply that the PEP grants some specific exemptions (regardless of whether 
>> that was Nick's intention when he wrote that sentence). I'd like clarity on 
>> this; IIRC we've had to make some compatibility-breaking changes in the past 
>> for security reasons, but I don't recall the details or how that worked out 
>> (whether much code broke and whether that was considered a good or a bad 
>> thing).
> 
> I’m pretty sure Nick was just trying to say that the changes made under this 
> PEP still have to be backwards compatible in the sense that APIs can’t change 
> their default behavior and such. In other words we can’t suddenly flip on 
> hostname checking or anything like that.
> 
> Then the words should be clarified (maybe by removing 'general'?). This PEP 
> invites interpretation by future generations so it should be as clear as 
> possible on the intent, to avoid scholarly arguments.
> 
> -- 
> --Guido van Rossum (python.org/~guido)

Yea I agree, was just stating what I understand the PEP to be proposing :)


-----------------
Donald Stufft
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