[Tutor] String slicing from tuple list
tegmine at gmail.com
Thu Jul 21 22:05:10 CEST 2005
On 21 Jul 2005 20:39:36 +0100, cgw501 at york.ac.uk <cgw501 at york.ac.uk> wrote:
> I have a list of tuples like this:
> [(1423, 2637),(6457, 8345),(9086, 10100),(12304, 15666)]
> Each tuple references coordinates of a big long string and they are in the
> 'right' order, i.e. earliest coordinate first within each tuple, and
> eearliest tuple first in the list. What I want to do is use this list of
> coordinates to retrieve the parts of the string *between* each tuple. So
> my example I would want the slices [2367:6457], [8345:9086] and
> [10100:12304]. Hope this is clear.
> I'm coming up short of ideas of how to achieve this. I guess a for loop,
> but I'm not sure how I can index *the next item* in the list, if that
> sense, or perhaps there is another way.
> Any help, as ever, appreciated.
> Not sure if I follow you, seems like computational biology or something to
> me, but my quick (and dirty) solution:
l = [(1423, 2637),(6457, 8345),(9086, 10100),(12304, 15666)]
for x in range(len(l)-1):
> l[x], l[x+1]
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