[Python-Dev] draft pep: backwards compatibility

[Antoine Pitrou]

Michael Foord <fuzzyman <at> voidspace.org.uk> writes:
> 
> And this is why expressing a finite list of things we guarantee won't 
> change is a virtually impossible task - unless one of you is 
> volunteering to write an official spec for Python and its libraries... 

Well, we *can* enumerate a list of things that are guaranteed not to change -
it's just that the list will be "completely incomplete", and the rest will rely
on application of common sense rather than formal guarantees.

And it actually more or less exists: it's Python's official documentation,
combined with a bit of common sense when interpreting its written text.

Regards

Antoine.