input: Write a function to create a dictionary from a list where the keys are the elements of the list and the values are the product of each element. The function should return the dictionary.
  
  def product_of_list(list):
      output = {}
      for element in list:
          output[element] = element * element
      return output
  
  assert product_of_list([])=={}
  assert product_of_list([7, 8, 5])=={7: 49, 8: 64, 5: 25}
  assert product_of_list([1, 2, 3, 4])=={1: 1, 2: 4, 3: 9, 4: 16}
  assert product_of_list([0])=={0: 0}
  assert product_of_list([-1, -2, -3])=={-1: 1, -2: 4, -3: 9}
output: def product_of_list(list):
      output = {}
      for element in list:
          output[element] = element * element
      return output