On 7 June 2016 at 14:33, Paul Sokolovsky <pmis...@gmail.com> wrote: > Hello, > > On Tue, 07 Jun 2016 13:28:13 -0700 > Ethan Furman <et...@stoneleaf.us> wrote: > >> Minor changes: updated version numbers, add punctuation. >> >> The current text seems to take into account Guido's last comments. >> >> Thoughts before asking for acceptance? >> >> > [] > >> Deprecation of current "zero-initialised sequence" behaviour >> ------------------------------------------------------------ >> >> Currently, the ``bytes`` and ``bytearray`` constructors accept an >> integer argument and interpret it as meaning to create a >> zero-initialised sequence of the given size:: >> >> >>> bytes(3) >> b'\x00\x00\x00' >> >>> bytearray(3) >> bytearray(b'\x00\x00\x00') >> >> This PEP proposes to deprecate that behaviour in Python 3.6, and >> remove it entirely in Python 3.7. > > Why the desire to break applications of thousands and thousands of > people?
Same argument as any deprecation: to make existing and future defects easier to find or easier to debug. That said, this is the main part I was referring to in the other thread when I mentioned some of the constructor changes were potentially controversial and probably not worth the hassle - it's the only one with the potential to break currently working code, while the others are just a matter of choosing suitable names. Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
