On Fri, Aug 27, 2010 at 5:25 AM, Jonny <jwringstad@gmail.com> wrote:
I would propose that an idiomatic way is created, for instance a pragma or statement, which allows one to disambiguate the used python version in a manner that is both obvious for the human reader, and as well allows python to reject the script, should the wrong version of the interpreter be present. I think this is a quite common problem[1][2], which could be solved in a fairly easy and pragmatic way.
Your proposed solution doesn't help with either of the linked Stack Overflow questions. The second one is completely covered by the existing sys.version_info() function, as it is only asking how to obtain the details of the running Python version. The first one is subtler, asking how to deal with code that won't even compile on earlier versions, so it will still fail to compile instead of degrading gracefully on older versions, even if the file is flagged somehow as requiring a later version. So it isn't at all clear what is to be gained here over the try-it-and-see-what-happens try/except approach (often best) or the explicit "sys.version_info() >= required_version" check. Cheers, Nick. -- Nick Coghlan | ncoghlan@gmail.com | Brisbane, Australia