naivebayes - naive bayes classifier code not working -


my code returns same value inputs in variable text

from textblob.classifiers import naivebayesclassifier textblob import textblob nltk.corpus import stopwords  operators=set(('not','never','no','but')) stop_words=set(stopwords.words("english"))-operators  open('pws.csv', 'r') fp:     cl = naivebayesclassifier(fp, format="csv")  text="this perfect."  text=text.lower() text=text.replace('.',' .') text=text.replace('!',' .')  sent=0.0 x=0 text2=""  if "whereas" in text:     i=text.find("whereas")     text=text[:i]+"."+text[i+7:] if "though" in text:     i=text.find(",")     text=text[:i]+"."+text[i+1:]  w in text.split():     if w in stop_words:         continue     else:         text2=text2+" "+w  print (text2)  test=open('test_data.csv') print(cl.accuracy(test))  blob=textblob(text2, classifier=cl)  s in blob.sentences:     print(s)     x=x+1     if "but" in s:         j=s.find("but")         t1=str(s[:j])         t2=str(s[(j+3):])         b1=textblob(t1, classifier=cl)         b2=textblob(t2, classifier=cl)         s1=float(b1.classify())         s2=float(b2.classify())         if "not" in t1 or "n't" in t1:             s1=s1*-1         if "not" in t2 or "n't" in t2:             s2=s2*-1         sent=sent+(((1.5*s1)+s2)/2)     else:         if "not" in s or "n't" in s:             print(float(s.classify())*-1)             sent=sent+(float(s.classify())*-1)         else:             print(s.classify())             sent=sent+float(s.classify()) print("sentiment of overall document:",round((sent/x),2))

output:

runfile('e:/sem 4/btp/final codes/abc.py', wdir='e:/sem 4/btp/final codes')  perfect . 0.0  perfect . -0.4 sentiment of overall document: -0.4

also, i'm unable understand why accuracy 0.

the file pws.csv follows:

good,0.6 amazing,0.95 great,0.8 awesome,0.95 love,0.7 like,0.5 better,0.4 beautiful,0.6 bad,-0.6 worst,-0.9 hate,-0.8 sad,-0.4 sadly,-0.4 disappointing,-0.6 angry,-0.7 happy,0.7 perfect,1.0 humour,0.7 best,1.0 inspirational,0.85 commendable,0.8 soothing,0.75 irrelevant,-0.4 fail,-0.7 lazy,-0.4

the code working fine earlier i'm unable find error now. please help.


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