C4W1 problem with greedy_decode_test

Course Q&A Natural Language Processing NLP with Attention Models
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When run greedy_decode_test(‘You are almost done with the assignment!’, NMTAttn=model, vocab_file=VOCAB_FILE, vocab_dir=VOCAB_DIR); goes to infinite loop. However, if i remove !, it could give a result.

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For me, it seems to be related to input sentence length. if you truncate to “You are almost done” it completes in a few seconds.