Update app.py

app.py

@@ -3,6 +3,13 @@ import requests
 from bs4 import BeautifulSoup
 from urllib.parse import urljoin
 
+import os
+import subprocess
+
+def install(package):
+    subprocess.check_call([os.sys.executable, "-m", "pip", "install", package])
+
+install("bs4")
 
 def google_search(query):
     """