On 30/05/2012 02:33, Roy Smith wrote:
I have a long string (possibly 100s of Mbytes) that I want to search for
regex matches. re.finditer() is *almost* what I want, but the problem
is that it returns matching strings. What I need is a list of offsets
in the string where the regex matched. Thus:
s = "this is a string"
find("is", s) => [2, 5]
Is there anything that does this?
re.finditer() doesn't return matching strings, it returns match
objects. What you want are the start positions of each match which the
match object can provide:
>>> s = "this is a string"
>>> [m.start() for m in re.finditer("is", s)]
[2, 5]
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