index of ina a for loop python code example

Example 1: for loop with index python3

colors = ["red", "green", "blue", "purple"]

for i in range(len(colors)):
    print(colors[i])

Example 2: python for loop index

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