input: Write a function to print out every number from 0 to 10, with each number being multiplied by 2. The function should not take any input and should simply print the result.
  
  def multiply_by_two():
      for i in range(11):
          print(i*2)
  
  assert multiply_by_two() is None
output: def multiply_by_two():
      for i in range(11):
          print(i*2)