% python
>>> from set import Set
>>> x = Set([1,2,3,4])          # runs __init__
>>> y = Set([3,4,5])

>>> x & y                       # __and__, intersect, then __repr__
Set:[3, 4]
>>> x | y                       # __or__, union, then __repr__
Set:[1, 2, 3, 4, 5]

>>> z = Set("hello")            # __init__ removes duplicates
>>> z[0], z[-1]                 # __getitem__ 
('h', 'o'

>>> for c in z: print c,        # __getitem__ 
...
h e l o
>>> len(z), z                   # __len__, __repr__
(4, Set:['h', 'e', 'l', 'o'])

>>> z & "mello", z | "mello"
(Set:['e', 'l', 'o'], Set:['h', 'e', 'l', 'o', 'm'])