iterate through list with only index python code example

Example 1: python for with iterator index

for index, value in enumerate(iterator):
    print(index, value)

Example 2: iterating with index in for loops python

colors = ["red", "green", "blue", "purple"]
ratios = [0.2, 0.3, 0.1, 0.4]
for color, ratio in zip(colors, ratios):
    print("{}% {}".format(ratio * 100, color))