do for loops in python have to use i code example

Example 1: python for loop

for i in range(5):
	print(i) #0, 1, 2, 3, 4
for i in range(2, 8):
  	print(i) #2, 3, 4, 5, 6, 7, 8
for i in range(2, 10, 2):
  	print(i) #2, 4, 6, 8, 10
for i in (['a', 'b', 'c']):
  print(i) #a, b, c

Example 2: python loop program

digits = [0, 1, 5]

for i in digits:
    print(i)
else:
    print("No items left.")