Iteration count in python?

Question

Let's say I have a list of tuples l, and I do something like this:

for (a,b) in l:
     do something with a,b, and the index of (a,b) in l

Is there an easy way to get the index of (a,b)? I can use the index method of list, but what if (a,b) is not unique? I can also iterate on the indexes in the first place, but its cumbersome. Is there something simpler?

hammar · Accepted Answer · 2011-12-21 13:51:35Z

17

Use enumerate.

for i, (a, b) in enumerate(l):
    # i will be the index of (a, b) in l

answered Dec 21, 2011 at 13:51

hammar

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NPE · Accepted Answer · 2011-12-21 13:50:30Z

16

Use enumerate():

for i,(a,b) in enumerate(l):
   ... # `i` contains the index

answered Dec 21, 2011 at 13:50

NPE

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