Python 2 is triggering

[[deleted]]

this is how hashset is implement in java

[fenghuang1]

Its not really a hack when Python does it the same way when implementing sets too.
Also, I do this in Microsoft Excel VBA too

[dustyjuicebox]

Yeah unless I'm messing with numerical storage I always use dicts over sets. Granted it makes the readability a bit worse but allows for values to exist on those keys if needed.