need help of RE
Steven Bethard
steven.bethard at gmail.com
Sun May 29 11:17:32 EDT 2005
John Machin wrote:
> >>> import re
> >>> text = "(word1 & (Word2|woRd3))".lower()
> # you seem to want downshifting ...
> >>> re.split(r"\W+", text)
> ['', 'word1', 'word2', 'word3', '']
> >>>
>
> Hmmm ... near, but not exactly what you want. We need to throw away
> those empty strings, which will appear if you have non-word characters
> at the ends of your text.
You can also avoid the empty strings at the end by using re.findall with
\w instead of re.split with \W:
py> import re
py> text = "(word1 & (Word2|woRd3))".lower()
py> re.findall(r"\w+", text)
['word1', 'word2', 'word3']
STeVe
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