one_offs | Track and manage your one off scripts

To get the test passing under both Python 2 and 3, I had to add the line __hash__ = None to Foo.

The assertItemsEqual/assertCountEqual function takes different code paths depending on whether or not the items in each list are hashable. And according to the docs:

If a class does not define a __cmp__() or __eq__() method it should not define a __hash__() operation either; if it defines __cmp__() or __eq__() but not __hash__(), its instances will not be usable in hashed collections.

With that in mind, Python 2 and 3 have different behavior with regard to __hash__ when __eq__ is defined:

• In Python 2, defining __eq__ does not affect the default-provided __hash__, but trying to use the item in a hashed container results in implementation-defined behavior (e.g. keys may be duplicated because they have different hashes, even if __eq__ would return True).
• In Python 3, defining __eq__ sets __hash__ to None.

As of Python 2.6, __hash__ can be explicitly set to None to make a class unhashable. In my case, this was required to get assertItemsEqual to use the correct comparison algorithm that relies on __eq__ instead of __hash__.

Here is an option to create dropdown of unique countries from the returned data. Not aiming for efficient way but does the job.