On Sun, 27 Mar 2005 14:39:06 -0800, James Stroud <[EMAIL PROTECTED]> wrote:
>Hello,
>
> I have strings represented as a combination of an alphabet (AGCT) and a an
> operator "/", that signifies degeneracy. I want to split these strings into
> lists of lists, where the degeneracies are members of the same list and
> non-degenerates are members of single item lists. An example will clarify
> this:
>
> "ATT/GATA/G"
>
> gets split to
>
> [['A'], ['T'], ['T', 'G'], ['A'], ['T'], ['A', 'G']]
>
> I have written a very ugly function to do this (listed below for the
> curious),
> but intuitively I think this should only take a couple of lines for one
> skilled in regex and/or listcomp. Any takers?
>>> import re
>>> s = 'ATT/GATA/G'
>>> re.findall('(./.|.)', s)
['A', 'T', 'T/G', 'A', 'T', 'A/G']
>>>
If it is really important to have ['A'] instead of 'A', etc, looping over the
result and noticing strings of length 3 vs length 1, then applying the
appropriate transformation, should be simple enough.
Jp
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