input: 
  from typing import List
  
  def print_number_pattern():
      """Prints a number pattern where each row contains numbers from 1 to the row number.
      
      Example:
      for print_number_pattern() == None
      Output:
      1
      12
      123
      1234
      1235
      """
      for i in range(1, 6):
          for j in range(1, i + 1):
              print(j, end="")
          print()
  
output:     for i in range(1, 6):
          for j in range(1, i + 1):
              print(j, end="")
          print()