Reference library

API design & gRPC

REST best practices, protobuf, API versioning, and backward-compatible service contracts.

1 match
API design & gRPC easy

How to Implement RBAC Permission Checks with a Route Decorator in Python

Build a reusable Python decorator that checks a user's role against allowed roles and raises a custom PermissionError when access is denied.

decorator rbac permissions
Python 
from functools import wraps
from enum import Enum

class Role(Enum):
    ADMIN = "admin"
    MODERATOR = "moderator"
    USER = "user"

class PermissionError(Exception):
    pass

def require_role(*allowed_roles):
    def decorator(func):
        @wraps(func)
        def wrapper(user_role, *args, **kwargs):
          …
13 0 Open

Browse by section

Each section groups closely related Python snippets.

API design & gRPC — Python code examples

What you will find here

This page collects api design & grpc snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup. Python code samples Copy-ready snippets to study and run in the IDE.