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Python Code Samples

Copy-ready Python snippets by topic and difficulty — short, focused, and runnable in the browser editor.

4 matches
OOP & classes easy

Design a Data Helper Class in Python

Create a simple Object-Oriented data helper with DataPoint and Dataset classes that store, describe, and summarize coordinate points.

oop classes data-helper
Python 
class DataPoint:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.label = None

    def describe(self):
        """Return a human-readable description of the data point."""
        base = f"DataPoint(x={self.x}, y={self.y})"
        return f"{base}, label='{self.label}'" if self.label e…
15 0 Open
OOP & classes easy

How to Build a Data Helper Class in Python with OOP

Create a beginner-friendly Python class that loads CSV data, filters records by field, and counts entries using object-oriented programming.

oop csv data
Python 
class DataHelper:
    """A beginner-friendly OOP helper for handling simple datasets."""
    
    def __init__(self, filename):
        self.filename = filename
        self.data = self._load_data()
    
    def _load_data(self):
        """Load data from a CSV file into a list of dictionaries."""
        import csv
 …
12 0 Open
OOP & classes easy

How to Define a Simple Class with __init__ and __repr__ in Python

Defines a Person class with __init__ to store name and age, and __repr__ to give a readable string representation.

class oop init
Python 
class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def __repr__(self):
        return f"Person(name='{self.name}', age={self.age})"


if __name__ == "__main__":
    p1 = Person("Alice", 30)
    p2 = Person("Bob", 25)
    print(p1)
    print(p2)
8 0 Open
System design patterns medium

Domain Driven Design Aggregate Root Example in Python

Model an Order as an aggregate root with invariants enforced through methods, demonstrating DDD principles in Python.

ddd aggregate-root object-oriented
Python 
from __future__ import annotations
from dataclasses import dataclass
from typing import List, Optional
from uuid import uuid4


class Money:
    def __init__(self, amount: float, currency: str = "USD"):
        self.amount = amount
        self.currency = currency

    def __add__(self, other: Money) -> Money:
       …
12 0 Open

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