'Does anybody know a FALCONN KNN alternative, which can be saved as pickle?

I execute the following script:

#!/usr/bin/env python3
import torch
import falconn

ct = falconn.LSHConstructionParameters()
torch.save(ct , "ct.pkl")

Error:

*** TypeError: cannot pickle '_falconn.LSHConstructionParameters' object

How to save this constructor on disk?

Then, on Github, I found that the Falconn object is not able to be saved as a pickle. source: https://github.com/VarIr/scikit-hubness/issues/20

Does anybody know a FALCONN KNN alternative, which can be saved as pickle?

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