def test_flatten(self):
self.assertEqual(
list(flatten(2, 3, "a", [2, 3, str, [5, [10, 89]]])),
[2, 3, "a", 2, 3, str, 5, 10, 89],
)
def validate_types(self, types):
for t in frozenset(flatten(types)):
if not inspect.isclass(t):
raise ValueError('%s is not a class' % t)
yield t