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
  
  gen = list_generator([1,3,5,7,9])
  assert list(gen)==[1,3,5,7,9]
  gen = list_generator([2,4,6,8,10])
  assert list(gen)==[2,4,6,8,10]
  gen = list_generator([0])
  assert list(gen)==[0]
  gen = list_generator([])
  assert list(gen)==[]
output: def list_generator(input_list):
      for item in input_list:
          yield item