Mike wrote:
On Jul 27, 11:34 am, MRAB <pyt...@mrabarnett.plus.com> wrote:
I've been working on a new implementation of the re module.
Fabulous!
If you're extending/changing the interface, there are a couple of sore
points in the current implementation I'd love to see addressed:
- findall/finditer doesn't find overlapping matches. Sometimes you
really *do* want to know all possible matches, even if they overlap.
This comes up in bioinformatics, for example.
Perhaps by adding "overlapped=True"?
- split won't split on empty patterns, e.g. empty lookahead patterns.
This means that it can't be used for a whole class of interesting
cases. This has been discussed previously:
http://bugs.python.org/issue3262
http://bugs.python.org/issue852532
http://bugs.python.org/issue988761
Already addressed (see issue2636 for the full details).
- It'd be nice to have a version of split that generates the parts
(one by one) rather than returning the whole list.
Hmm, re.splititer() perhaps.
- Repeated subgroup match information is not available. That is, for
a match like this
re.match('(.){3}', 'xyz')
there's no way to discover that the subgroup first matched 'x', then
matched 'y', and finally matched 'z'. Here is one past proposal
(mine), perhaps over-complex, to address this problem:
http://mail.python.org/pipermail/python-dev/2004-August/047238.html
Yikes! I think I'll let you code that... :-)
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