Need help with these python methods.

Python methods. #Return True if the list is decreasing. False otherwise. A list is decreasing if each element # in it is strictly less than the element before it. An empty list or a list with one element is assumed # to be decreasing. def is_decreasing(self): As an example, calling the method on linked list with the values 12 9 8 4 3 2 should return True, while the list 9 8 7 7 4 3 1 would cause the method to return False. Removes sequences of two or more repeating values in the list. The method #should modify the list, but should NOT return or output anything. def remove_reps(so1f): As an example, calling the method on the linked list with the values 3 4 4 5 6 6 6 4 would modify the list to 3 5 4. Calling the method on the linked list 4 3 2 5 4 would keep the list unchanged. Calling the method on the linked list 5 5 5 would remove all elements. Modify method main to test these methods