input: from typing import List
  
  def print_number_pattern():
      """Prints a number pattern where the ith line contains the numbers from 1 to i.
      For example, the first line will be "1", the second line will be "12", etc.
      >>> print_number_pattern()
      1
      12
      123
      1234
      12345
      """
      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()