Reference library

API design & gRPC

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

1 match
API design & gRPC easy

How to Build a Data Helper Class in Python for Beginners

Create a beginner-friendly DataHelper class that stores, retrieves, filters, and summarizes records in a list of dictionaries.

dataclasses data-handling beginner
Python 
from __future__ import annotations

import json
from dataclasses import dataclass, field
from typing import Any, Dict, List, Optional


@dataclass
class DataHelper:
    """A beginner-friendly helper for common data tasks."""

    data: List[Dict[str, Any]] = field(default_factory=list)

    def add_record(self, record…
14 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.