>>> import itertools
>>> x = {"Milk", "Eggs", "Cookies"}
>>> itertools.permutations(x)
<itertools.permutations object at 0x7f416384ac50>
>>> for i in _: print(i)
...
('Eggs', 'Cookies', 'Milk')
('Eggs', 'Milk', 'Cookies')
('Cookies', 'Eggs', 'Milk')
('Cookies', 'Milk', 'Eggs')
('Milk', 'Eggs', 'Cookies')
('Milk', 'Cookies', 'Eggs')