Update app.py

app.py

@@ -1,7 +1,9 @@
 import pandas as pd
 import numpy as np
 from scipy.sparse import csr_matrix
+from sklearn.feature_extraction.text import TfidfVectorizer
 from sklearn.metrics.pairwise import cosine_similarity
+from sklearn.metrics.pairwise import linear_kernel
 import gradio as gr
 import zipfile
 import random