Page 195 - Data Science Algorithms in a Week
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Python Reference


            Output:

                $ python example06_list.py
                The primes less than 10 are: [2, 3, 5, 7]



            Set
            A set in Python is a non-ordered mathematical set of values.

            Input:

                # source_code/appendix_c_python/example07_set.py
                from sets import Set

                boys = Set(['Adam', 'Samuel', 'Benjamin'])
                girls = Set(['Eva', 'Mary'])
                teenagers = Set(['Samuel', 'Benjamin', 'Mary'])
                print 'Adam' in boys
                print 'Jane' in girls
                girls.add('Jane')
                print 'Jane' in girls
                teenage_girls = teenagers & girls #intersection
                mixed = boys | girls #union
                non_teenage_girls = girls - teenage_girls #difference
                print teenage_girls
                print mixed
                print non_teenage_girls
            Output:

                $ python example07_set.py
                True
                False
                True
                Set(['Mary'])
                Set(['Benjamin', 'Adam', 'Jane', 'Eva', 'Samuel', 'Mary'])
                Set(['Jane', 'Eva'])














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