Fix return hint for EnumerableSpace.get_elements() and simplify implementations #450
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In code, the result of
EnumerableSpace.get_elements()
is used for:for a in elements
if a in elements
elements[i]
len(elements)
random.sample(elements, 2)
So this is actually expected to be a
Sequence
(see https://docs.python.org/3/library/collections.abc.html#collections-abstract-base-classes).We fix the annotation and simplify the implementations by removing the wrapping in
numpy.array()
as it is not required and even sometimes re-wrapped in anumpy.array()
elsewhere in the code.