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Python Code Samples

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3 matches
OOP & classes easy

How to Build an In-Memory CRUD Repository Class in Python

Define a Python Repository class that stores objects in a dictionary and supports create, read, update, delete, and list operations.

repository crud oop
Python 
class Repository:
    def __init__(self):
        self._data = {}

    def create(self, key, value):
        self._data[key] = value
        return key

    def read(self, key):
        return self._data.get(key)

    def update(self, key, value):
        if key not in self._data:
            raise KeyError(f"Key '{ke…
14 0 Open
API design & gRPC easy

Create a Data Helper in Python for gRPC-style APIs

This code builds a simple DataHelper class that mimics gRPC request/response handling with in-memory storage, JSON serialization, and basic CRUD operations for beginners.

dataclasses grpc api-design
Python 
import json
from dataclasses import dataclass, asdict
from typing import Dict, Any


@dataclass
class User:
    user_id: int
    name: str
    email: str


class DataHelper:
    """Simple helper to demonstrate gRPC-like data handling for beginners."""

    def __init__(self) -> None:
        self._users: Dict[int, Use…
14 0 Open
API design & gRPC easy

How to Build a Simple Data Helper in Python for API Design

Create a beginner-friendly DataHelper class that demonstrates basic CRUD operations (add, get, list, remove) using an in-memory dictionary, ideal for learning API design concepts.

api-design data-structures crud
Python 
class DataHelper:
    """Simple data helper for beginners learning API design concepts."""
    
    def __init__(self):
        self._data = {}
    
    def add_record(self, key, value):
        """Add a record to the store."""
        self._data[key] = value
        return f"Added: {key} -> {value}"
    
    def get_…
12 0 Open

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