title: How to get rid of punctuation using NLTK tokenizer?
body: <p>I'm just starting to use NLTK and I don't quite understand how to get a list of words from text. If I use <code>nltk.word_tokenize()</code>, I get a list of words and punctuation. I need only the words instead. How can I get rid of punctuation? Also <code>word_tokenize</code> doesn't work with multiple sentences: dots are added to the last word.</p>