Iterate a list with indexes
list, python
Solution
>>> a = [3,4,5,6]
>>> for i, val in enumerate(a):
... print i, val
...
0 3
1 4
2 5
3 6
>>>
Problem
I could swear I've seen the function (or method) that takes a list, like this `[3, 7, 19]` and makes it into iterable list of tuples, like so: `[(0,3), (1,7), (2,19)]` to use it instead of: ``` for i in range(len(name_of_list)): name_of_list[i] = something ``` but I can't remember the name and googling "iterate list" gets nothing.