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

for name in l:
    print(name)
# Alice
# Bob
# Charlie

for i, name in enumerate(l):
    print(i, name)
# 0 Alice
# 1 Bob
# 2 Charlie

for i, name in enumerate(l, 1):
    print(i, name)
# 1 Alice
# 2 Bob
# 3 Charlie

for i, name in enumerate(l, 42):
    print(i, name)
# 42 Alice
# 43 Bob
# 44 Charlie

for i, name in enumerate(l, 1):
    print('{:03}_{}'.format(i, name))
# 001_Alice
# 002_Bob
# 003_Charlie

step = 3
for i, name in enumerate(l):
    print(i * step, name)
# 0 Alice
# 3 Bob
# 6 Charlie
