Why doesn't the \\g<0>
work with unicode regex?
When I tried to use \\g<0>
to insert a space before and after the group with normal string regex, it works:
>>> punct = """,.:;!@#$%^&*(){}{}|\/?><"'"""
>>> rx = re.compile('[%s]' % re.escape(punct))
>>> text = '''"anständig"'''
>>> rx.sub(r" \g<0> ",text)
' " anst\xc3\xa4ndig " '
>>> print rx.sub(r" \g<0> ",text)
" anständig "
but with unicode regex, the space isn't added:
>>> punct = u""",–−—’‘‚”“‟„!£"%$'&)(+*-€/.±°´·¸;:=<?>@§#¡•[˚]»_^`≤…\«¿¨{}|"""
>>> rx = re.compile("["+"".join(punct)+"]", re.UNICODE)
>>> text = """„anständig“"""
>>> rx.sub(ur" \g<0> ", text)
'\xe2\x80\x9eanst\xc3\xa4ndig\xe2\x80\x9c'
>>> print rx.sub(ur" \g<0> ", text)
„anständig“
\\g
to work in unicode regex? punct
? I think you have two errors. First, you are not escaping punct
like in the first example with re.escape
and you have characters like []
that need to be escaped. And second, text
variable is not unicode. Example that works:
>>> punct = re.escape(u""",–−—’‘‚”“‟„!£"%$'&)(+*-€/.±°´·¸;:=<?>@§#¡•[˚]»_^`≤…\«¿¨{}|""")
>>> rx = re.compile("["+"".join(punct)+"]", re.UNICODE)
>>> text = u"""„anständig“"""
>>> print rx.sub(ur" \g<0> ", text)
„ anständig “
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