Sets are unordered collections of values that are great for removing duplicates, quick containment checks, and set operations. Table of contentsWhat are sets? Sets are like dictionaries without values Quick containment checks with sets Using set arithmetic Converting to a set for efficiency Checking for duplicates What are sets good for in Python? What are sets? Like lists, sets are collections of values: >>> fruits={"apples","strawberries","pears","apples"} But unlike lists, sets can't conta...