Update chatbot.py

Author: parulnith

chatbot.py

@@ -3,29 +3,15 @@
 
 # # Meet Robo: your friend
 
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 import nltk
 
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 # nltk.download() # for downloading packages
 
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 import numpy as np
 import random
 import string # to process standard python strings
 
 
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 f=open('corpus.txt','r',errors = 'ignore')
 raw=f.read()
 raw=raw.lower()# converts to lowercase
@@ -35,21 +21,12 @@
 word_tokens = nltk.word_tokenize(raw)# converts to list of words
 
 
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 sent_tokens[:2]
 
 
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 word_tokens[:5]
 
 
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 lemmer = nltk.stem.WordNetLemmatizer()
 def LemTokens(tokens):
     return [lemmer.lemmatize(token) for token in tokens]
@@ -58,15 +35,10 @@ def LemNormalize(text):
     return LemTokens(nltk.word_tokenize(text.lower().translate(remove_punct_dict)))
 
 
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 GREETING_INPUTS = ("hello", "hi", "greetings", "sup", "what's up","hey",)
 GREETING_RESPONSES = ["hi", "hey", "*nods*", "hi there", "hello", "I am glad! You are talking to me"]
 
 
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 # Checking for greetings
 def greeting(sentence):
@@ -76,16 +48,10 @@ def greeting(sentence):
             return random.choice(GREETING_RESPONSES)
 
 
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 from sklearn.feature_extraction.text import TfidfVectorizer
 from sklearn.metrics.pairwise import cosine_similarity
 
 
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 # Generating response
 def response(user_response):
     robo_response=''
@@ -104,9 +70,6 @@ def response(user_response):
         return robo_response
 
 
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 flag=True
 print("ROBO: My name is Robo. I will answer your queries about Chatbots. If you want to exit, type Bye!")