update_app.py

import os
import shutil

# Backup the original app.py
if os.path.exists('app.py'):
    print("Backing up original app.py to app.py.bak")
    shutil.copy('app.py', 'app.py.bak')

# Copy the fixed version to app.py
if os.path.exists('app_fixed.py'):
    print("Replacing app.py with fixed version")
    shutil.copy('app_fixed.py', 'app.py')
    print("Done! The app.py file has been updated.")
else:
    print("Error: app_fixed.py not found!")