Update app.py

app.py

@@ -1,3 +1,4 @@
+import os
 import streamlit as st
 import streamlit_antd_components as sac
 
@@ -19,18 +20,24 @@ with st.sidebar:
         ]),
     ], open_all=True)
 
+# Function to load and execute a file if it exists
+def exec_file(file_path):
+    if os.path.exists(file_path):
+        with open(file_path) as f:
+            exec(f.read(), globals())
+    else:
+        st.error(f"File not found: {file_path}")
+
 # Link to the respective pages using exec
 if menu_item == 'Home':
     st.write("Home Page")
-    exec(open('folder/pages/home.py').read())
+    exec_file('folder/pages/home.py')
 elif menu_item == 'Apple':
     st.write("Apple Page")
-    exec(open('folder/apple.py').read(), globals())
+    exec_file('folder/apple.py')
 elif menu_item == 'Google':
     st.write("Google Page")
-    exec(open('folder/pages/google.py').read(), globals())
+    exec_file('folder/pages/google.py')
 elif menu_item == 'Products':
     st.write("Products Page")
-    exec(open('folder/pages/products.py').read(), globals())
-
-
+    exec_file('folder/pages/products.py')