input: 
  def print_output_pattern():
      """
      Print the output pattern according to the given instruction.
      The output should look like:
      1
      12
      123
      1234
      12345
      """
      for i in range(1, 6):
          for j in range(1, i + 1):
              print(j, end="")
          print()
  
  # Example:
  # print_output_pattern()
  # Output:
  # 1
  # 12
  # 123
  # 1234
  # 12345
  
output:     for i in range(1, 6):
          for j in range(1, i + 1):
              print(j, end="")
          print()