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Python Code Samples

Medium snippets you can copy, study, and run in the browser editor.

3 matches
OOP & classes medium

Bridge Pattern in Python: Separate Abstraction from Implementation

Implement the Bridge design pattern in Python so that an abstraction (remote control) can operate on different device implementations independently.

bridge design-pattern oop
Python
class RemoteControl:
    """Abstraction: controls a device without knowing implementation details."""
    def __init__(self, device):
        self.device = device

    def toggle_power(self):
        if self.device.is_enabled():
            self.device.disable()
            return "Power off"
        else:
           …
15 0 Open
Cloud + Python medium

Mock S3, GCS, and Azure storage with a Python abstract interface

Define an abstract Storage interface and implement a local, filesystem-backed mock so S3, GCS, and Azure code can be tested without cloud dependencies.

storage abstraction testing
Python
from abc import ABC, abstractmethod
from pathlib import Path


class Storage(ABC):
    @abstractmethod
    def put(self, name: str, data: bytes) -> None:
        pass

    @abstractmethod
    def get(self, name: str) -> bytes:
        pass


class LocalStorage(Storage):
    def __init__(self, base_dir: str = "mock_sto…
14 0 Open
System design patterns medium

Facade Pattern in Python with Mock Simplification

This code demonstrates the Facade pattern by hiding complex subsystem interactions behind a simple start/stop interface, and adds a MockFacade for testing failure scenarios.

facade-pattern design-patterns abstraction
Python
class SubsystemA:
    def operation_a(self):
        return "Subsystem A: ready"

class SubsystemB:
    def operation_b(self):
        return "Subsystem B: ready"

class SubsystemC:
    def operation_c(self):
        return "Subsystem C: ready"


class Facade:
    def __init__(self):
        self._a = SubsystemA()
   …
15 0 Open

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