Loop through list with both content and index [duplicate]

Question

It is very common for me to loop through a python list to get both the contents and their indexes. What I usually do is the following:

S = [1,30,20,30,2] # My list for s, i in zip(S, range(len(S))):     # Do stuff with the content s and the index i 

I find this syntax a bit ugly, especially the part inside the zip function. Are there any more elegant/Pythonic ways of doing this?

Answer 1

Use enumerate():

>>> S = [1,30,20,30,2] >>> for index, elem in enumerate(S):         print(index, elem)  (0, 1) (1, 30) (2, 20) (3, 30) (4, 2) 

Answer 2

Use the enumerate built-in function: http://docs.python.org/library/functions.html#enumerate