Creating a Backup Manager File
 

• In your code editor, create a new file named backup\_manager.py. This file will contain all the code for saving and retrieving past sessions.
• Paste the following code into backup\_manager.py. It defines two simple functions that create a backup of your session data in a JSON file and restore it when needed. Since Lovable does not allow terminal commands, the required modules will be loaded automatically by Python.

import json
import os

# Change the file name if necessary
BACKUP_FILE = "session_backup.json"

def backup\_sessions(sessions):
    """Creates a backup of the sessions dictionary."""
    try:
        with open(BACKUP\_FILE, 'w') as f:
            json.dump(sessions, f, indent=4)
        print("Backup successful.")
    except Exception as e:
        print("Backup failed:", str(e))

def restore\_sessions():
    """Restores sessions from the backup file if it exists."""
    if os.path.exists(BACKUP\_FILE):
        try:
            with open(BACKUP\_FILE, 'r') as f:
                sessions = json.load(f)
            print("Restore successful.")
            return sessions
        except Exception as e:
            print("Restore failed:", str(e))
            return None
    else:
        print("No backup found.")
        return None
  

 
Integrating Backup into Your Session Management
 

• Open the file where your session management code resides. This might be called sessions\_handler.py or be part of your main application file.
• Add the following code snippet to import the backup functions and use them whenever your session data changes. The code shows how to save a new session and reload previous sessions on startup. Adjust the variable names if your code uses different ones.

from backup_manager import backup_sessions, restore\_sessions

# Assume that your session data are stored in a dictionary called 'sessions'
sessions = {}

def save_session(session_id, session\_data):
    """Saves a new session and immediately backs up all sessions."""
    sessions[session_id] = session_data
    backup\_sessions(sessions)

def load_previous_sessions():
    """Loads sessions from the backup file if available."""
    global sessions
    previous_sessions = restore_sessions()
    if previous\_sessions is not None:
        sessions = previous\_sessions
  

 
Ensuring Backup on Startup and During Session Updates
 

• In your main application file (for example, app.py), make sure to call load_previous_sessions() when the application starts. This ensures that any previous session data is available as soon as your app runs.
• Include the following snippet near the entry point of your application. Placing it at the beginning of your main code will allow for the earlier restoration of backups.

if **name** == "**main**":
    load_previous_sessions()
    # Place your main application logic here.
    # For example, starting a server or processing user input.
  

 
Notes on Dependency Management
 

• Because Lovable handles dependency management within the code environment and does not use a terminal, there is no need to install any additional libraries manually. The json and os libraries used in these snippets are built into Python.

 
Creating a Backup Settings File
 

• Create a new file named config\_backup.py in your project’s root folder. This file holds the important settings for backing up your sessions. Place the following code into the file:

• 
  # Define the backup directory and the current session file path
  BACKUP\_DIR = "./backups"
  SESSION_FILE = "./sessions/v0_session.json"
        

• This file is used by other parts of your code to know where to read the session data and where to save the backup files.

 
Implementing the Backup Function
 

• Create a file named backup\_restore.py in your project’s root folder. This file will contain the functions for both backing up and restoring session data.
• Insert the following code into backup\_restore.py to implement the backup function. This function will read the current session file and save a backup with a timestamp:

• 
  import os
  import json
  from datetime import datetime
  from config_backup import BACKUP_DIR, SESSION\_FILE
  
  def backup_session():
      # Try to load the current session data
      try:
          with open(SESSION_FILE, 'r') as file:
              session_data = json.load(file)
      except Exception as e:
          print("Error reading session file:", e)
          return
  # Create the backup directory if it doesn't exist
  if not os.path.exists(BACKUP\_DIR):
      os.makedirs(BACKUP\_DIR)
  
  # Create a unique backup filename using the current date and time
  timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
  backup_filename = os.path.join(BACKUP_DIR, f"v0_session_backup\_{timestamp}.json")
  
  try:
      with open(backup_filename, 'w') as backup_file:
          json.dump(session_data, backup_file)
      print(f"Backup successful: {backup\_filename}")
  except Exception as e:
      print("Error writing backup file:", e)
    </code></pre>
  </li>
  
    

• You can call this function wherever your session data changes. For example, right after updating the session in your main application file.