how to iterate list in a position code example

Example 1: iterate through an array python

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

Example 2: python iterate list

lst = [12, 123, 1234, 12345]
for i in lst:
  print(i)
**********************result*********************
12
123
1234
12345