# Sets [Sets](https://www.w3schools.com/python/python_sets.asp) (sets) are ** not ordered **. A set will store each value only once. To create a set we use parentheses as shown below. `` `python # Creates an empty set S = set () # Add some elements S.ADD (1) S.ADD (2) S.ADD (3) S.ADD (4) S.ADD (3) S.ADD (1) # Removes 2 from the set S.Remove (2) # Print the full list print (s) # Prints the size of the list Print (F "The set has {len (s)} elements.") # Results in: # {1, 3, 4} # The set has 3 elements. `` ` :: ** Reference: ** :: [Python Documentation on Native Types] (https://docs.python.org/3/library/stdtypes.html)