Michael Spencer said unto the world upon 2005-03-27 20:04:
James Stroud 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']]
>>> def group(src):
... stack = []
... srciter = iter(src)
... for i in srciter:
... if i == "/":
... stack[-1].append(srciter.next())
... else:
... stack.append([i])
... return stack
...
>>> group("ATT/GATA/G")
[['A'], ['T'], ['T', 'G'], ['A'], ['T'], ['A', 'G']]
>>>
Michael
Much nicer than mine. =| :-)
^
|
---- (hats off)
I've got to get iterators into my working vocabulary!
Best,
Brian vdB
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