input: Write a function to print all the divisors of a given number.
  
  def print_divisors(num):
      divisors = []
      for i in range(1, num + 1):
          if num % i == 0:
              divisors.append(i)
      print('The divisors of', num, 'are:')
      print(*divisors, sep=', ')
  
  assert print_divisors(12)
  # Output:
  # The divisors of 12 are:
  # 1, 2, 3, 4, 6, 12
  
  assert print_divisors(15)
  # Output:
  # The divisors of 15 are:
  # 1, 3, 5, 15
  
  assert print_divisors(1)
  # Output:
  # The divisors of 1 are:
  # 1
  
  assert print_divisors(0)
  # Output:
  # The divisors of 0 are:
  # 1
output: def print_divisors(num):
      divisors = []
      for i in range(1, num + 1):
          if num % i == 0:
              divisors.append(i)
      print('The divisors of', num, 'are:')
      print(*divisors, sep=', ')