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How to get rid of punctuation using NLTK tokenizer?

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 nltk.word_tokenize() , I get a list of words and punctuation. I need only the words instead. How can I get rid of punctuation? Also word_tokenize doesn't work with multiple sentences: dots ar...
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What is the difference between Amazon SNS and Amazon SQS?

I don't understand when I would use SNS versus SQS, and why are they always coupled together? 6 Answers ...
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List all the files that ever existed in a Git repository

...eaching me a bit more in the comments, this version has a shorter pipeline and gives git more opportunity to get things right. git log --pretty=format: --name-only --diff-filter=A | sort -u share | ...
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RSpec controller testing - blank response.body

...l always returns an empty string. In browser everything renders correctly, and cucumber feature tests seem to get it right, but RSpec fails each and every time. ...
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Best way to write to the console in PowerShell

... I have typed that in .vbs script. Just that line of code and it's throwing me error. – FrenkyB Jan 1 '14 at 18:44 add a comment  |  ...
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Image fingerprint to compare similarity of many images

...produce a normative mapping of the image data - store this with each image and then compare just the fingerprints. This is a complex algorithm and not for the faint of heart. a few simple solutions are possible: Create a luminosity histogram for the image as a fingerprint Create scaled down versi...
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How do I use HTML as the view engine in Express?

I tried this simple change from the seed and created the corresponding .html files (e.g. index.html). 16 Answers ...
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Useful example of a shutdown hook in Java?

...ying to make sure my Java application takes reasonable steps to be robust, and part of that involves shutting down gracefully. I am reading about shutdown hooks and I don't actually get how to make use of them in practice. ...
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Can I list-initialize a vector of move-only type?

...gspot.com/2013/09/…). The idea is to determine lvalue/rvalue at run-time and then call move or copy-construction. in<T> will detect rvalue/lvalue even though the standard interface provided by initializer_list is const reference. – Sumant Sep 24 '13 at ...
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Difference between InvariantCulture and Ordinal string comparison

...trings in c# for equality, what is the difference between InvariantCulture and Ordinal comparison? 9 Answers ...