"Bala subramanian" <bala.biophys...@gmail.com> wrote
But here the value of y changes sequentially. I want y to cycle
through the
list something like the following. Is there any function to do such
circular
iteration.
cycle 1 y's value should be 'N', 'L', 'C', 'M, 'R' index 1,2,3,4,0
of myres
cycle 2 y's value should be 'L', 'C', 'M, 'R', 'N' index 2,3,4,0,1
,,
cycle 3 y's value should be 'C', 'M', 'R', 'N','L' index 3,4,0,1,2
,,
The usual trick to get cyclic indices is to use the mod operator
with the length of the list (and maybe adding a constant)
So
L = "RNLCM"
y = 0 -> (y+1) % len(L) -> 1
y = 1 -> 2
...
y = 4 -> 0
y = 5 -> 1
etc....
Does that help?
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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