python iterate with index

1items=['baseball','basketball','football']
2for index, item in enumerate(items):
3    print(index, item)

1colors = ["red", "green", "blue", "purple"]
2
3for i in range(len(colors)):
4    print(colors[i])
5

1colors = ["red", "green", "blue", "purple"]
2i = 0
3while i < len(colors):
4    print(colors[i])
5    i += 1
6

1for index, item in enumerate(iterable, start=1):
2   print index, item
3

1# Creates two variables; An index (num), and the value at that index (line)
2for num, line in enumerate(lines):
3    print("{0:03d}: {}".format(num, line))
4

1colors = ["red", "green", "blue", "purple"]
2for i in range(len(colors)):
3    print(colors[i])
4