input: def print_pattern():
      """
      Print the following output pattern:
      1
      12
      123
      1234
      1235
      >>> print_pattern()
      1
      12
      123
      1234
      1235
      """
output:     for i in range(1, 6):
          print(''.join(str(j) for j in range(1, i + 1)))