% python
>>> from set import *
>>> x = Set('abcd')			# create 2 Set instances
>>> y = Set(['x', 'a', 'y', 'b'])
>>> y.concat('lm')			# tack on another sequence
>>> print x.intersect('sjuabl')
<Set:['a', 'b']>			# use __repr__ print overload
>>> x & Set(('b', 'q'))			# use __and__ method overload
<Set:['b']>
>>> z = (x | y)				# use __or__ union operator
>>> for item in z: print item,		# use __getitem__ Set iteration
... 
a b c d x y l m
>>> for i in range(len(z)):		# use __len__ overload
...     if z[i] in x:			# use 'in' Set membership test
...         print z[i],			# use __getitem__ Set indexing
... 
a b c d
>>> x = Set([1,1,2,3])
>>> x
<Set:[1, 2, 3]>
>>> x | Set([1,2,3,4,4,2])		# duplicates filtered out
<Set:[1, 2, 3, 4]>