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POoperating on embedded tuples/strings, python
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4294474
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2010-11-27T23:24:38.263
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2010-11-28T02:34:13.197
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2010-11-28T02:34:13.197
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say I have a tagged text (word, tag) in tuple format. i want to convert it to a string in order to make some changes to the tags. my function below only sees the last sentence in the text, i guess there is some obvious and stupid mistake which i cant realize, so plz help to make it work on the entire text. <pre><code>>>> import nltk >>> tpl = [[('This', 'V'), ('is', 'V'), ('one', 'NUM'), ('sentence', 'NN'), ('.', '.')], [('And', 'CNJ'), ('This', 'V'), ('is', 'V'), ('another', 'DET'), ('one', 'NUM')]] def translate(tuple2string): for sent in tpl: t = ' '.join([nltk.tag.tuple2str(item) for item in sent]) >>> print t 'And/CNJ This/V is/V another/DET one/NUM' </code></pre> P.S. for those who are interested, tuple2str function is described <a href="http://docs.huihoo.com/nltk/0.9.5/guides/tag.html" rel="nofollow">here</a> EDIT: now i should convert it back to a tuple, having the same format. How do i do it? <pre><code>>>> [nltk.tag.str2tuple(item) for item in t.split()] </code></pre> the one above converts in into entire tuple, but i need embedded one (the same as in the input (<code>tpl</code>) ) EDIT2: well, probably it's worth to publish the entire code: <pre><code>def translate(tpl): t0 = [' '.join([nltk.tag.tuple2str(item) for item in sent]) for sent in tpl] for t in t0: t = re.sub(r'/NUM', '/N', t) t = [nltk.tag.str2tuple(item) for item in t.split()] print t </code></pre>
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<python><string><tuples><nltk>
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operating on embedded tuples/strings, python
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