input: Write a python function to print a loop with a start and end value, and a tag for each iteration.
  assert print_loop(0, 3, 'test 1') == None  # Output should be: test 1: 0 test 1: 1 test 1: 2
  assert print_loop(1, 4, 'test 2') == None  # Output should be: test 2: 1 test 2: 2 test 2: 3
  assert print_loop(2, 5, 'test 3') == None  # Output should be: test 3: 2 test 3: 3 test 3: 4
output: def print_loop(start, end, tag):
      for i in range(start, end):
          print(f"{tag}: {i}")