text: def largest_number(input_list: list):
      if(len(input_list) == 0 or len(input_list) == 1):
          return None
  
      max_number = input_list[0]
  
      for number in input_list:
          if(number > max_number):
              max_number = number
  
      return max_number
  
  
  def second_largest_number(input_list: list):
      if(len(input_list) == 0 or len(input_list) == 1):
          return None
  
      input_list.remove(largest_number(input_list))
      return largest_number(input_list)
  
  print(second_largest_number([-1,2,3,3564]))