On Sat, 27 Feb 2016 08:17 pm, subhabangal...@gmail.com wrote: > Is it any error in Python part or in NLTK part?
Neither. Any time you think there is an error in Python, it is 99.9% sure that the error is in your code, not Python. If the error is a SyntaxError, that is 99.99999%. > If any one may guide me what is the error I am doing and how may I solve > it. Look at the SyntaxError traceback and read what it says. Does it tell you what the error is? Does it use a ^ as an arrow to point to the error, or immediately after the error? Chances are, the error is that you have added or deleted a bracket or parenthesis somewhere. Dealing with nested lists like this is usually awful, because they are unreadable. Can you avoid copying and pasting the nested list? If not, try re-formatting it so you can at least read it: # Unreadable, bad: thelist = [Tree('S', [Tree('LOCATION', [(u'NAIROBI', 'NNP')]), (u',', ','), Tree('LOCATION', [(u'Kenya', 'NNP')]), (u'(', '('), Tree('ORGANIZATION', [(u'AP', 'NNP')]), (u')', ')'), (u'_', 'NNP'), Tree('CARDINAL', [(u'Thousands', 'NNP')]), (u'of', 'IN'), (u'laborers,', 'JJ'), (u'students', 'NNS'), (u'and', 'CC'), (u'opposition', 'NN'), (u'politicians', 'NNS'), (u'on', 'IN'), Tree('DATE', [(u'Saturday', 'NNP')]), (u'protested', 'VBD'), (u'tax', 'NN'), (u'hikes', 'NNS'), (u'imposed', 'VBN'), (u'by', 'IN'), (u'their', 'PRP$'), (u'cash-strapped', 'JJ'), (u'government,', 'NN'), (u'which', 'WDT'), (u'they', 'PRP'), (u'accused', 'VBD'), (u'of', 'IN'), (u'failing', 'VBG'), (u'to', 'TO'), (u'provide', 'VB'), (u'basic', 'JJ'), (u'services.', 'NN'), (u'(cm-kjd)', 'NN')])] # Slightly more readable, good: thelist = [ Tree('S', [ Tree( 'LOCATION', [ (u'NAIROBI', 'NNP') ] ), (u',', ','), Tree( 'LOCATION', [ (u'Kenya', 'NNP') ] ), (u'(', '('), Tree( 'ORGANIZATION', [ (u'AP', 'NNP') ] ), (u')', ')'), (u'_', 'NNP'), Tree( 'CARDINAL', [ (u'Thousands', 'NNP') ] ), (u'of', 'IN'), (u'laborers,', 'JJ'), (u'students', 'NNS'), (u'and', 'CC'), (u'opposition', 'NN'), (u'politicians', 'NNS'), (u'on', 'IN'), Tree( 'DATE', [ (u'Saturday', 'NNP') ] ), (u'protested', 'VBD'), (u'tax', 'NN'), (u'hikes', 'NNS'), (u'imposed', 'VBN'), (u'by', 'IN'), (u'their', 'PRP$'), (u'cash-strapped', 'JJ'), (u'government,', 'NN'), (u'which', 'WDT'), (u'they', 'PRP'), (u'accused', 'VBD'), (u'of', 'IN'), (u'failing', 'VBG'), (u'to', 'TO'), (u'provide', 'VB'), (u'basic', 'JJ'), (u'services.', 'NN'), (u'(cm-kjd)', 'NN') ] ) ] If you format your giant list so you can see the structure, then you will likely find where there is a problem. Perhaps you have: - missing or too many [ ( ) or ] - a missing or extra comma - a missing or extra quotation marks - unexpected symbols like .... inside the list -- Steven -- https://mail.python.org/mailman/listinfo/python-list