adding the missing methods

adding the `stopwords_removal` and `stemming_process`

app.py

@@ -195,8 +195,11 @@ def re_whitespaces(text_list):
     white_spaces_end = [re.sub('[ \t]+$', '', r) for r in white_spaces]
     return white_spaces_end
 
-# Class for regular expressions application
+def stopwords_removal(text, cached_stopwords=stopwords.words('english')):
+    return [c.lower() for c in text.split() if c.lower() not in cached_stopwords]
 
+def stemming_process(text, stemmer=RSLPStemmer()):
+    return [stemmer.stem(c) for c in text.split()]
 
 # Get English stopwords
 en_stopwords = stopwords.words('english')