How to check if a key exists in a word2vec trained model or not

Question

Word2Vec also provides a ‘vocab’ member, which you can access directly.

Using a pythonistic approach:

if word in w2v_model.vocab:
    # Do something

EDIT Since gensim release 2.0, the API for Word2Vec changed. To access the vocabulary you should now use this:

if word in w2v_model.wv.vocab:
    # Do something

EDIT 2 The attribute ‘wv’ is being deprecated and will be completed removed in gensim 4.0.0. Now it’s back to the original answer by OP:

if word in w2v_model.vocab:
    # Do something