STINNER Victor <victor.stin...@haypocalc.com> added the comment: lemburg> This is not possible for unichr() in Python 2.x, since applications lemburg> always expect len(unichr(x)) == 1
Oh, ok. lemburg> Changing ord() would be possible in Python 2.x is easier, since lemburg> this would only extend the range of returned values for UCS2 lemburg> builds. ord() of Python3 (narrow build) rejects surrogate characters: '\U00010000' >>> len(chr(0x10000)) 2 >>> ord(0x10000) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: ord() expected string of length 1, but int found --- It looks that narrow builds with surrogates have some more problems... Test with U+10000: "LINEAR B SYLLABLE B008 A", category: Letter, Other. Correct result (Python 2.5, wide build): $ python Python 2.5.1 (r251:54863, Jul 31 2008, 23:17:40) >>> unichr(0x10000) u'\U00010000' >>> unichr(0x10000).isalpha() True Error in Python3 (narrow build): marge$ ./python Python 3.1a0 (py3k:69105M, Feb 3 2009, 15:04:35) >>> chr(0x10000).isalpha() False >>> list(chr(0x10000)) ['\ud800', '\udc00'] >>> chr(0xd800).isalpha() False >>> chr(0xdc00).isalpha() False Unicode ranges, all in the category "Other, Surrogate": - U+D800..U+DB7F: Non Private Use High Surrogate - U+DB80..U+DBFF: Private Use High Surrogate - U+DC00..U+DFFF: Low Surrogate" range _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5127> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
