How to get word2index from gensim

The mappings from word-to-index are in the KeyedVectors vocab property, a dictionary with objects that include an index property.

For example:

word = "whatever"  # for any word in model
i = model.vocab[word].index
model.index2word[i] == word  # will be true

Even simpler solution would be to enumerate index2word

word2index = {token: token_index for token_index, token in enumerate(w2v.index2word)} 
word2index['hi'] == 30308  # True

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