In [1]:

    

l = ['Alice', 'Bob', 'Charlie']


    

In [2]:

    

for name in l:
    print(name)


    

    




Alice
Bob
Charlie

In [3]:

    

for i, name in enumerate(l):
    print(i, name)


    

    




0 Alice
1 Bob
2 Charlie

In [4]:

    

for i, name in enumerate(l, 1):
    print(i, name)


    

    




1 Alice
2 Bob
3 Charlie

In [5]:

    

for i, name in enumerate(l, 42):
    print(i, name)


    

    




42 Alice
43 Bob
44 Charlie

In [6]:

    

for i, name in enumerate(l, 1):
    print('{:03}_{}'.format(i, name))


    

    




001_Alice
002_Bob
003_Charlie

In [7]:

    

step = 3
for i, name in enumerate(l):
    print(i * step, name)


    

    




0 Alice
3 Bob
6 Charlie