On Wed, Apr 22, 2009 at 9:33 PM, David Lyon <david.l...@preisshare.net> wrote: > Hi Steve, >>> Why should the package developer dictacte which python version the >>> package will run on ? >> >> Because they're the developer. Who else should decide what Python >> versions to support? > The developer shouldn't be making such decisions at all.... > What hardware or operating systems we run his/her programs on is > up to the real world to decide. > If you think about it logically... why are we even asking our > developers to even "build" their packages for specific python > versions in the first place? > They should just:
Programmers need to know what they are programming for. Each version of the language changes things, and the old interpreters often cannot understand things introduced in later versions. There is no way to magically get code written for one version to work for a different version. Code written on any python less than 3 will work on any higher python version up to (but not including) 3, and the same is true for the 3 series, but going back down needs somebody to do the conversion, unless the programmer was meticulous in making it work on all versions. This problem of course, isn't just looming, it's been around for a while. Every time a new python version is introduced, there is chaos as some library writers move over, and some stay with the old, and others bend over backwards to support everybody. Unfortunately, it can't be helped, and the best people to handle the situation are the library authors themselves. The only way to prevent this would be to not release any new versions ever. In the case of python 3, there are probably some who would prefer to have no new versions ever, but no progress can be made without asking the question to move along with the moving target or stay comfortable. Now, a system to give developers access to more test configurations would help make it easier to support more systems. This is the approach of snakebite. But some giant network that automatically tests all of pypi on all configurations is infeasible, somehow automatically forcing libraries to work is not even possible. -- http://mail.python.org/mailman/listinfo/python-list
