On 24/05/2011, Victor Stinner <victor.stin...@haypocalc.com> wrote: > > In Python 2, codecs.open() is the best way to read and/or write files > using Unicode. But in Python 3, open() is preferred with its fast io > module. I would like to deprecate codecs.open() because it can be > replaced by open() and io.TextIOWrapper. I would like your opinion and > that's why I'm writing this email.
There are some modules that try to stay compatible with Python 2 and 3 without a source translation step. Removing the codecs classes would mean they'd have to add a few more compatibility hacks, but could be done. As an aside, I'm still not sure how the io module should be used. Example, a simple task I've used StreamWriter classes for is to wrap stdout. If the stdout.encoding can't represent a character, using "replace" means you can write any unicode string without throwing a UnicodeEncodeError. With the io module, it seems you need to construct a new TextIOWrapper object, passing the attributes of the old one as parameters, and as soon as someone passes something that's not a TextIOWrapper (say, a StringIO object) your code breaks. Is the intention that code dealing with streams needs to be covered in isinstance checks in Python 3? Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
