input: def print_output_pattern() -> None:
      """ Print a pattern where each line contains numbers from 1 to the current line number.
      Example:
      for print_output_pattern() == None
      Output:
      1
      12
      123
      1234
      12345
      """
output:     for i in range(1, 6):
          print(''.join(str(j) for j in range(1, i + 1)))