A Python class implementing a simple user management system using the Singleton design pattern. The UserManager class allows you to add, update, retrieve, and delete user information.
- Add new users
- Add and update user data
- Retrieve user data
- Delete users and user data
- Singleton pattern to ensure only one instance of the UserManager
from user_manager import UserManager
# Create an instance of UserManager
users = UserManager()
# Add users
users.add_user("alice")
users.add_user("bob")
# Add data to users
users.add_user_data("alice", "age=25")
users.add_user_data("bob", "[email protected]")
# Update user data
users.user_change_data("alice", "age=26")
# Retrieve user data
print(users.get_user_data("bob", "email"))
# Delete user data
users.del_user_data("alice", "city")
# Delete a user
users.del_user("bob")