input: Write a Python function that computes the product of distinct elements in a provided list.
  assert unique_product([10, 20, 30, 40, 20, 50, 60, 40]) == 720000000
  assert unique_product([1, 2, 3, 1,]) == 6
  assert unique_product([7, 8, 9, 0, 1, 1]) == 0
output: def unique_product(lst):
      distinct_elements = set(lst)
      product = 1
      for num in distinct_elements:
          product *= num
      return product