On Apr 29, 2:46 pm, Julien <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I'm fairly new in Python and I haven't used the regular expressions
> enough to be able to achieve what I want.
> I'd like to select terms in a string, so I can then do a search in my
> database.
>
> query = ' " some words" with and "without quotes " '
> p = re.compile(magic_regular_expression) $ <--- the magic happens
> m = p.match(query)
>
> I'd like m.groups() to return:
> ('some words', 'with', 'and', 'without quotes')
>
> Is that achievable with a single regular expression, and if so, what
> would it be?
>
> Any help would be much appreciated.
>
> Thanks!!
>
> Julien
You can't do it simply and completely with regular expressions alone
because of the requirement to strip the quotes and normalize
whitespace, but its not too hard to write a function to do it. Viz:
import re
wordre = re.compile('"[^"]+"|[a-zA-Z]+').findall
def findwords(src):
ret = []
for x in wordre(src):
if x[0] == '"':
#strip off the quotes and normalise spaces
ret.append(' '.join(x[1:-1].split()))
else:
ret.append(x)
return ret
query = ' " Some words" with and "without quotes " '
print findwords(query)
Running this gives
['Some words', 'with', 'and', 'without quotes']
HTH
Harvey
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