Video 1,2 : Map part 1,2 map( callback function, target list ) - map:takes in a list -> output to other values ( works like callback function ) - mapObject : cannot be iterated more than 1 - mapObject can be conveted into a list Vide 3: lambda: declare an inline function mapObject = map(lambda x: x-10, myList) x is argument : end of argument and begining of what to do sorted - sorted(myList, Optional. A Function to execute to decide the order: key = takes a function) Video 4: List Comprehensions - listCompResults = [x**2 for x in myList] - Video 5: Filter - ilter(function, iterable list)