[Python-Dev] Policy Decisions, Judgment Calls, and Backwards Compatibility (was Re: splitext('.cshrc'))

[Phillip J. Eby]

At 08:57 AM 3/9/2007 +0100, Martin v. Löwis wrote:
>In the case that triggered the discussion, the change implemented
>was not an incompatible change, because the new implementation still
>met the old specification (which, of course, was underspecified).

No, it wasn't, actually.  Read the doc strings, which state exactly what 
the code does.


Windows:

 >>> import os
 >>> help(os.path.splitext)
Help on function splitext in module ntpath:

splitext(p)
     Split the extension from a pathname.

     Extension is everything from the last dot to the end.
     Return (root, ext), either part may be empty.


Posix:

 >>> import os
 >>> help(os.path.splitext)
Help on function splitext in module posixpath:

splitext(p)
     Split the extension from a pathname.  Extension is everything from the
     last dot to the end.  Returns "(root, ext)", either part may be empty.