I still think this is the most useful python library I've ever made and I'm kind of sad it hasn't found its audience (probably because I need to make more compelling examples) https://github.com/aparrish/simpleneighbors
(it's a simplified wrapper for approximate nearest neighbor lookups that obviates the need to use or even think about e.g. annoy or scipy.kdtree)
@aparrish I hadn't seen it before, but I will definitely use it now, because I too have written those helper functions for annoy far too many times
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