input: Write a function to create a Python generator that returns numbers from a given list.
  
  def list_generator(input_list):
      for item in input_list:
          yield item
  
  assert list(list_generator([1,3,5,7,9]))==[1,3,5,7,9]
  assert list(list_generator([2,4,6,8,10]))==[2,4,6,8,10]
  assert list(list_generator([]))==[]
  assert list(list_generator([0]))==[0]
  assert list(list_generator([-1,0,1]))==[-1,0,1]
output: def list_generator(input_list):
      for item in input_list:
          yield item