python with comment please

9. Write a specification and implementation for a function that squeezes the duplicates out of a sorted list. For example: >>> x = (1, 1, 3, 3, 3, 4, 5, 5, 8, 9, 9, 9, 9, 10] >>> squeeze (x) >>> x [1, 3, 4, 5, 8, 9, 10) Test your function thoroughly and analyze its theta efficiency