Coercing issue when the code is run

[KungFuPandey]

I am getting the following error , can you please help ?

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TypeError Traceback (most recent call last) in () 60 #tries using all words as the feature selection mechanism 61 print 'using all words as features' ---> 62 evaluate_features(make_full_dict) 63 64 #scores words based on chi-squared test to show information gain (http://streamhacker.com/2010/06/16/text-classification-sentiment-analysis-eliminate-low-information-features/)

in evaluate_features(feature_select) 14 #http://stackoverflow.com/questions/367155/splitting-a-string-into-words-and-punctuation 15 #breaks up the sentences into lists of individual words (as selected by the input mechanism) and appends 'pos' or 'neg' after each list ---> 16 with open(RT_POLARITY_POS_FILE, 'r') as posSentences: 17 for i in posSentences: 18 posWords = re.findall(r"[\w']+|[.,!?;]", i.rstrip())

TypeError: coercing to Unicode: need string or buffer, RDD found