On Wed, Nov 16, 2005 at 03:09:56PM -0500, Shane wrote:
> Hi folks,
>
> I'm new to regular expressions (and a novice at Python) but it seems to be
> the tool I need for a particular problem. I have a bunch of strings that
> looks like this:
>
> 'blahblah_sf1234-sf1238_blahblah'
>
> and I would like to use the re module to parse all the 'sfXXXX' parts of the
> string. Each 'sfXXXX' needs to be its own string when I am through. How do I
> compile a regular expression that looks for more than one instance? Currently
> my expression looks like this:
>
> myString = re.compile('sf[0-9][0-9][0-9][0-9]')
>
> This works great for finding the first instance of 'sfXXXX'. I hope that was
> clear :)
>
> Thanks,
>
> Shane
> --
> http://mail.python.org/mailman/listinfo/python-list
You can simplify your pattern
myString = re.compile('sf[0-9][0-9][0-9][0-9]')
to
myString = re.compile(r"sf\d{4}")
>>> import re
>>> s = 'blahblah_sf1234-sf1238_blahblah'
>>> pat = re.compile(r"sf\d{4}")
>>> re.findall(pat, s)
['sf1234', 'sf1238']
>>> for m in re.finditer(pat, s):
... print m.group()
...
sf1234
sf1238
>>>
Inyeol
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