Hi, On Tuesday 18 September 2007 04:18:01 Guido van Rossum wrote: > I'm considering the following option: bytes would always be immutable, > (...) make b[0] return a bytes array of length 1 instead of a small int
Great idea! That will help migration from Python 2.x to Python 3.0. Choosing between byte and character string is already a difficult choice. So choosing between mutable (current bytes type) and immutable string (current str type) is a more difficult choice. And substring behaviour change (python 2.x => 3) was also strange for python programmers. >>> 'xyz'[0] 'x' >>> b"xyz"[0] 120 This result is not symmetric. I would prefer what Guido proposes: >>> 'xyz'[0] 'x' >>> b"xyz"[0] b'x' And so be able to write such tests: >>> b"xyz"[:2] == b'xy' True >>> b"xyz"[0:1] == b'x' True >>> b"xyz"[0] == b'x' True Victor Stinner http://hachoir.org/ _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
