new_contents: def is_multiple_of_five(n):
      return not n % 5
  
  def get_multiple_of_five(n):
      return list(filter(is_multiple_of_five, range(n)))
  
  print(get_multiple_of_five(50))
  
  def get_multiple_of_five_lambda(n):
      return list(filter(lambda k: not k % 5, range(n)))
  
  print(get_multiple_of_five_lambda(50))
  
  def calculator(func, a, b):
      return func(a, b)
  
  print(calculator(lambda x, y: x + y, 1, 2))
  print(calculator(lambda x, y: x * y, 1, 2))
subject: Add lambda demo