Update app.py

app.py

@@ -53,7 +53,7 @@ def phrase_query(query, num_results=10):
     return response
 
 def search(query, num_results=10):
-    if query[0]=='"' and query[-1]=='"':
+    if query.startswith('"') and query.endswith('"'):
         response = phrase_query(query, num_results=num_results)
     else:
         response = match_query(query, num_results=num_results)