'int' object has no attribute 'append'

When I run this code then following error is encountered, I am new to programming and I know I have bunch of useless arrays. I don't know where my error is as I have declared j as an array. I am completely out of ideas.

import pyodbc,nltk,array,re,itertools cnxn = pyodbc.connect('Driver={MySQL ODBC 5.1 Driver};Server=127.0.0.1;Port=3306;Database=information_schema;User=root; Password=1234;Option=3;') cursor = cnxn.cursor() cursor.execute("use collegedatabase ;") cursor.execute("select * from sampledata ; ") cnxn.commit() s=[] j=[] x=[] words = [] w = [] sfq = [] POS=[] wnl = nltk.WordNetLemmatizer() p = [] clean= [] l =[] tupletolist= [] results = [] aux = [] regex = re.compile("\w+\.") pp = [] array1=[] f = open("C:\\Users\\vchauhan\\Desktop\\tupletolist.txt","w") for entry in cursor: s.append(entry.injury_type),j.append(entry.injury_desc) def isAcceptableChar(character): return character not in "~!@#$%^&*()_+`1234567890-={}|:<>?[]\;',/." from nltk.tokenize import word_tokenize from nltk.corpus import stopwords english_stops = set(stopwords.words('english')) for i in range(0,200): j.append(filter(isAcceptableChar, j[i])) w.append([word for word in word_tokenize(j[i].lower()) if word not in english_stops]) for j in range (0,len(w[i])): results = regex.search(w[i][j]) if results: str.rstrip(w[i][j],'.') for a in range(0 , 200): sfq.append(" ".join(w[a])) from nltk.stem import LancasterStemmer stemmer = LancasterStemmer() for i in range (0,200): pp.append(len(w[i])) for a in range (0,200): p.append(word_tokenize(sfq[a])) POS.append([wnl.lemmatize(t) for t in p[a]]) x.append(nltk.pos_tag(POS[a])) clean.append((re.sub('()[\]{}'':/\-[(",)]','',str(x[a])))) cursor.execute("update sampledata SET POS = ? where SRNO = ?", (re.sub('()[\]{}'':/\-[(",)]','',str(x[a]))), a) for i in range (0,len(array1)): results.append(regex.search(array1[i][0])) if results[i] is not None: aux.append(i) f.write(str(w)) 

Exception:

Traceback (most recent call last): File "C:\Users\vchauhan\Desktop\regexsolution_try.py", line 37, in <module> j.append(filter(isAcceptableChar, j[i])) AttributeError: 'int' object has no attribute 'append' 

4 Answers

j has been used a a list as well as an integer. Use j only for integer name, name the list to something else.

j.append(filter(isAcceptableChar, j[i])) # j is not a list here,it is an int. w.append([word for word in word_tokenize(j[i].lower()) if word not in english_stops]) for j in range (0,len(w[i])): # here j is an int 

Take a close look at the following piece of your code:

for i in range(0,200): j.append(filter(isAcceptableChar, j[i])) w.append([word for word in word_tokenize(j[i].lower()) if word not in english_stops]) for j in range (0,len(w[i])): 

Notice how you first call .append on j (which you had initialized with a list earlier), then use it as a loop variable nested in the same loop.

Use better, meaningful variable names in your code to avoid this class of errors. Rename either the loop variable or the module-level list variable.

You seem to use the variable 'j' as a int-counter in the loop, i.e. the list 'j' is replaced by an int 'j' where you cannot append something. Solution: Rename the variables with more sophisticated names...

Your indentation is broken, but it seems like it's this line that is the culprit:

for j in range (0,len(w[i])): 

The first time, j is an array, but then you hide it with the int j. It's hard to discover since what causes the error seems to happen after it, but since it's in a loop, that's not really true. Try renaming this integer.