def review_to_wordlist(review, remove_stopwords=False):
# Function to convert a document to a sequence of words,
# optionally removing stop words. Returns a list of words.
#
# 1. Remove HTML
review_text = BeautifulSoup(review).getText()
#
# 2. Remove non-letters
review_text = re.sub("[^a-zA-Z]", " ", review_text)
#
# 3. Convert words to lower case and split them
words = review_text.lower().split()
#
# 4. Optionally remove stop words (false by default)
if remove_stopwords:
stops = set(stopwords.words("english"))
words = [w for w in words if not w in stops]
#taggedwords= nltk.pos_tag(words)
#taggedwords= [s for s in taggedwords if s[1] != 'NN']
#lists= []
#for i in xrange( 0,len(taggedwords)):
# lists.append(taggedwords[i][0])
#taggedwords.
# 5. Return a list of words
return (words)
def paragraph_to_wordlist( raw_review):
# Function to clean data
#
# removing html tags using BeautifulSoup api
review_text = BeautifulSoup(raw_review).text
#
# removing non-alpahbetical data
review_text = re.sub("[^a-zA-Z]"," ", review_text)
#
# converting to consistant lowercase
words = review_text.lower().split()
return(words)
def paragraph_to_wordlist(raw_review):
# Function to clean data
#
# removing html tags using BeautifulSoup api
review_text = BeautifulSoup(raw_review).text
#
# removing non-alpahbetical data
review_text = re.sub("[^a-zA-Z]", " ", review_text)
#
# converting to consistant lowercase
words = review_text.lower().split()
return (words)
def generate_snippet(self,url):
snippet_list = []
req = urllib2.Request(url)
req.add_header('User-Agent', 'Mozilla/5.0' )
try:
page = urllib2.urlopen(req)
code = page.getcode()
text = BeautifulSoup(page.read()).body.getText()
for s in self.query:
if s not in self.stopwords:
ind = text.lower().find(s)
if ind not in snippet_list:
self.snippet += text[max(ind-30,0):min(ind+30,(len(text)-1))].strip()
self.snippet += u"... "
snippet_list.append(ind)
except urllib2.HTTPError, err:
return (None,err.code)
def review_to_wordlist( raw_review, remove_stopwords=False ):
# Function to convert a document to a sequence of words,
# optionally removing stop words. Returns a list of words.
#
# 1. Remove HTML
review_text = BeautifulSoup(raw_review).text
#
# 2. Remove non-letters
review_text = re.sub("[^a-zA-Z]"," ", review_text)
#
# 3. Convert words to lower case and split them
words = review_text.lower().split()
#
# 4. Optionally remove stop words (false by default)
if remove_stopwords:
words = [w for w in words if not w in stops]
#
# 5. Return a list of words
return(words)
def review_to_wordlist(raw_review, remove_stopwords=False):
# Function to convert a document to a sequence of words,
# optionally removing stop words. Returns a list of words.
#
# 1. Remove HTML
review_text = BeautifulSoup(raw_review).text
#
# 2. Remove non-letters
review_text = re.sub("[^a-zA-Z]", " ", review_text)
#
# 3. Convert words to lower case and split them
words = review_text.lower().split()
#
# 4. Optionally remove stop words (false by default)
if remove_stopwords:
words = [w for w in words if not w in stops]
#
# 5. Return a list of words
return (words)