Update app.py

app.py

@@ -42,7 +42,8 @@ KAGGLE_INPUT_PATH='/kaggle/input'
 KAGGLE_WORKING_PATH='/kaggle/working'
 KAGGLE_SYMLINK='kaggle'
 
-!umount /kaggle/input/ 2> /dev/null
+import subprocess
+subprocess.run(["umount", "/kaggle/input/"], stderr=subprocess.DEVNULL)
 shutil.rmtree('/kaggle/input', ignore_errors=True)
 os.makedirs(KAGGLE_INPUT_PATH, 0o777, exist_ok=True)
 os.makedirs(KAGGLE_WORKING_PATH, 0o777, exist_ok=True)