Update app.py

app.py

@@ -105,9 +105,7 @@ with col_swap:
 
     if swap:
         st.session_state.source_lang, st.session_state.target_lang = st.session_state.target_lang, st.session_state.source_lang
-        temp = text_to_translate
-        text_to_translate = st.session_state.translation
-        st.session_state.translation = temp
+        st.session_state.text_to_translate, st.session_state.translation = st.session_state.translation, st.session_state.text_to_translate
 
 with col1:
     st.markdown('<h3 class="col-container">'+st.session_state.source_lang+'</h3>', unsafe_allow_html=True)