Chris Jerdonek added the comment: Attached is a proposed patch.
Some explanation behind the patch that stems from the above comments: The following is an example of Formatter.format() returning str in the current implementation that would break if we made Formatter.format() return unicode whenever format_string is unicode: >>> f.format(u"{0}", "\xc3\xa9") # UTF-8 encoded "e-acute". '\xc3\xa9' (It would break with a UnicodeDecodeError because 'ascii' is the default encoding.) Since we can't change Formatter.format(format_string) to return unicode whenever format_string is unicode without breaking existing code, I believe the best we can do is to document the departure from PEP 3101. Since the caller has to handle return values of type str anyways, I don't think it helps to ensure that more return values are unicode. ---------- Added file: http://bugs.python.org/file27222/issue-15951-2-branch27.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15951> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com