input: Write a function to generate the following output pattern based on the given input value n. The function should print numbers from 1 to i for each row where i ranges from 1 to n. The function should return None.
  assert print_number_pattern(5) == None
  assert print_number_pattern(3) == None
  assert print_number_pattern(1) == None
  assert print_number_pattern(0) == None
  assert print_number_pattern(-1) == None
output: def print_number_pattern(n):
      for i in range(1, n + 1):
          for j in range(1, i + 1):
              print(j, end='')
          print()