How is the process of user rights verification for resource access carried out?

User permission verification for resource access typically involves several steps:

1. Authentication — confirming the user's identity (e.g., via login and password, token).
2. Authorization — checking whether the authenticated user has rights to a specific resource or action.

In Python, especially in web applications, this is often implemented through middleware or decorators. For example, in Django or Flask, decorators can be used to check permissions:

from flask import Flask, request, abort

app = Flask(__name__)

# Example of simple permission check

def requires_role(role):
    def decorator(f):
        def wrapper(*args, **kwargs):
            user = get_current_user()  # function to get the current user
            if user is None or role not in user.roles:
                abort(403)  # access denied
            return f(*args, **kwargs)
        return wrapper
    return decorator

@app.route('/admin')
@requires_role('admin')
def admin_panel():
    return "Welcome to the admin panel"

Thus, the permission check process involves obtaining user information, determining their roles or rights, and comparing them with the required permissions for resource access. If they do not match — access is denied.