input: Below is an instruction that describes a task. Write a response that appropriately completes the request.
  
  def print_checkered_pattern() -> None:
      """
      Prints a 7x7 checkered pattern using '#' and spaces.
      >>> print_checkered_pattern()
      # # # # # 
       # # # # #
      # # # # # 
       # # # # #
      # # # # # 
       # # # # #
      # # # # # 
      """
  
      for i in range(7):
          for j in range(7):
              if (i + j) % 2 == 0:
                  print('#', end='')
              else:
                  print(' ', end='')
          print()
output:     for i in range(7):
          for j in range(7):
              if (i + j) % 2 == 0:
                  print('#', end='')
              else:
                  print(' ', end='')
          print()