Update app.py

app.py

@@ -44,8 +44,9 @@ def login():
             st.error("The email address is not valid.")
     password = st.text_input("Password", type="password")
     if st.button("Login"):
-        if username in col.find():
-            if password in col.find():
+        document = col.find_one({"username": username})
+        if document:
+            if password == document["password"]:
                 st.session_state.user = username
                 st.experimental_rerun()
             else: