Update app.py

app.py

@@ -20,6 +20,14 @@ def load_models():
     st.success("The model has loaded.")
   st.session_state['models_loaded'] = True
 
+def is_port_in_use(port):
+  import socket
+  with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+    return s.connect_ex(('0.0.0.0', port)) == 0
+    
+if 'models_loaded' not in st.session_state:
+  st.session_state['models_loaded'] = False
+
 def get_correction(input_text):
   st.markdown(f'##### Corrected text:')
   st.write('')