Author vstinner
Recipients dangra, ezio.melotti, lemburg, sjmachin, vstinner
Date 2010-04-03.14:43:21
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Message-id <1270305802.77.0.0073241346145.issue8271@psf.upfronthosting.co.za>
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> I also found out that, according to RFC 3629, surrogates 
> are considered invalid and they can't be encoded/decoded, 
> but the UTF-8 codec actually does it.

Python2 does, but Python3 raises an error.

Python 2.7a4+ (trunk:79675, Apr  3 2010, 16:11:36)
>>> u"\uDC80".encode("utf8")
'\xed\xb2\x80'

Python 3.2a0 (py3k:79441, Mar 26 2010, 13:04:55)
>>> "\uDC80".encode("utf8")
UnicodeEncodeError: 'utf-8' codec can't encode character '\udc80' in position 0: surrogates not allowed

Deny encoding surrogates (in utf8) causes a lot of crashs in Python3, because most functions calling suppose that _PyUnicode_AsString() does never fail: see #6687 (and #8195 and a lot of other crashs). It's not a good idea to change it in Python 2.7, because it would require a huge work and we are close to the first beta of 2.7.
History
Date User Action Args
2010-04-03 14:43:22vstinnersetrecipients: + vstinner, lemburg, sjmachin, ezio.melotti, dangra
2010-04-03 14:43:22vstinnersetmessageid: <1270305802.77.0.0073241346145.issue8271@psf.upfronthosting.co.za>
2010-04-03 14:43:21vstinnerlinkissue8271 messages
2010-04-03 14:43:21vstinnercreate