input: Write a function to print out all the odd numbers from 1 to 10 using a loop in Python. Do not return any value; just print the numbers directly.
  assert print_odd_numbers(1, 10)
  
  (Note: The function assert is used to visually indicate that the function should be run, but it doesn't need an explicit return value since the function prints directly to the console.)
output: def print_odd_numbers(start, end):
      for num in range(start, end + 1):
          if num % 2 != 0:
              print(num)