Fixed FastTextKeyedVectors handling in add_vector #3389
Merged
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Fixes issue #3388
Since Gensim 4.0,
'key' in FastTextKeyedVectors
always returns True by design.This resulted in vectors not being added when performing
FastTextKeyedVectors.add_vectors()
due to the way thatin_vocab_mask
was being created.The proper way to check if a key already exists is with
'key' in FastTextKeyedVectors.key_to_index
.