>>> a = [1, 2, 3]

>>> for index, item in enumerate(a):

    print index, item

0 1

1 2

2 3

>>> b = (1, 2, 3)

>>> for index, item in enumerate(b):

    print index, item

0 1

1 2

2 3

>>> c = {'a':1, 'b':2, 'c':3}

>>> for index, item in enumerate(c):

    print index, item

0 a

1 c

2 b

>>> d = "hello world"

>>> for index, item in enumerate(d):

    print index, item

0 h

1 e

2 l

3 l

4 o

5

6 w

7 o

8 r

9 l

10 d