Update chatbot.py

Author: parulnith

chatbot.py

@@ -9,6 +9,8 @@
 import numpy as np
 from sklearn.feature_extraction.text import TfidfVectorizer
 from sklearn.metrics.pairwise import cosine_similarity
+import warnings
+warnings.filterwarnings('ignore')
 
 import nltk
 from nltk.stem import WordNetLemmatizer