# coding:utf-8
        #loop sets
        #join sets
        
        
        thisset = {"apple", "banana", "cherry"}
        
        for x in thisset:
          print(x)
         
        # Both union() and update() will exclude any duplicate items. 
        set1 = {"a", "b" , "c"}
        set2 = {1, 2, 3}
        set3 = set1.union(set2)
        print(set3)
        
        
        set1.update(set2)
        print(set1)