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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 do 3 dots next to a parameter type mean in Java?

...who decided to use optional arguments to properly implement the method to handle having zero or more of them. – kiswa May 16 '13 at 13:08 1 ...
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Sort a list by multiple attributes?

...1], x[2])) Or you can achieve the same using itemgetter (which is faster and avoids a Python function call): import operator s = sorted(s, key = operator.itemgetter(1, 2)) And notice that here you can use sort instead of using sorted and then reassigning: s.sort(key = operator.itemgetter(1, 2)...
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What are the recommendations for html tag?

...re deciding whether to use the <base> tag or not, you need to understand how it works, what it can be used for and what the implications are and finally outweigh the advantages/disadvantages. The <base> tag mainly eases creating relative links in templating languages as you don't need...
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Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference

...nicity. Forewords This topic has been iterated at least a couple of thousands of times, here, in Stack Overflow. Hence, first off I'd like to point out some extremely useful resources: @Felix Kling's answer to "How do I return the response from an asynchronous call?". See his excellent answer ex...
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How to sort an IEnumerable

... .ToList(); or (if you want to later add more items to the list and keep it sorted) _components = xml.Descendants("component") .Select(c => (string)c) .Distinct() .ToList(); _components.Add("foo"); _components.Sort(); ...
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Django vs. Model View Controller [closed]

Can somebody explain me where the diferences are between Django and the Model View Controller pattern? 4 Answers ...
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Removing a list of characters in string

... If you're using python2 and your inputs are strings (not unicodes), the absolutely best method is str.translate: >>> chars_to_remove = ['.', '!', '?'] >>> subj = 'A.B!C?' >>> subj.translate(None, ''.join(chars_to_remove))...
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How to serve an image using nodejs

... 2016 Update Examples with Express and without Express that actually work This question is over 5 years old but every answer has some problems. TL;DR Scroll down for examples to serve an image with: express.static express connect http net All of the exa...
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Why use String.Format? [duplicate]

Why would anyone use String.Format in C# and VB .NET as opposed to the concatenation operators ( & in VB, and + in C#)? ...