tuple([ , , ]out[ ]( sets sets are immutable and contain only unique elements in [ ]{ , , , out[ ]{ in [ ]{ , , , , out[ ]{ so this is neat way for obtaining unique elements in list in [ ]my_list [ set(my_listout[ ]{ or tuple in [ ]my_tuple ( set(my_tupleout[ ]{ one can perform set operations on sets ;-in [ ] { , , { , , print( ' + ={ union( )}'print( ' - ={ - }'print( ' * ={ intersection( )}'print( ' * ={ intersection({})}' + ={ - ={ * ={ * =set(