Author acdha
Recipients acdha, ezio.melotti, mrabarnett
Date 2013-03-07.20:52:32
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Message-id <1362689552.47.0.00880933015098.issue17381@psf.upfronthosting.co.za>
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I noticed an interesting failure while using re.match / re.sub to look for non-Cyrillic characters in allegedly Russian text:

>>> re.sub(r'[\s\u0400-\u0527]+', ' ', 'Архангельская губерния', flags=re.IGNORECASE)
'Архангельская губерния'
>>> re.sub(r'[\s\u0400-\u0527]+', '', 'Архангельская губерния', flags=0)
''

The same is true in Python 2.7, although you need to use ur'' patterns for the literals to be expanded:

>>> re.sub(ur'[\s\u0400-\u0527]+', '', u'Архангельская губерния', flags=re.IGNORECASE|regex.UNICODE)
u'\u0410\u0440\u0445\u0430\u043d\u0433\u0435\u043b\u044c\u0441\u043a\u0430\u044f\u0433\u0443\u0431\u0435\u0440\u043d\u0438\u044f'


In contrast, the regex module behaves as expected:

>>> regex.sub(ur'[\s\u0400-\u0527]+', '', u'Архангельская губерния', flags=regex.IGNORECASE|regex.UNICODE)
u''

(Transcript maintained at https://gist.github.com/acdha/5111687)
History
Date User Action Args
2013-03-07 20:52:32acdhasetrecipients: + acdha, ezio.melotti, mrabarnett
2013-03-07 20:52:32acdhasetmessageid: <1362689552.47.0.00880933015098.issue17381@psf.upfronthosting.co.za>
2013-03-07 20:52:32acdhalinkissue17381 messages
2013-03-07 20:52:32acdhacreate