def add(self, item): self._items.append(item)

The Builder pattern is commonly used when dealing with complex objects that have multiple dependencies or require a specific construction process.

The Builder pattern, on the other hand, is a creational design pattern that separates the construction of complex objects from their representation. This pattern allows for more control over the construction process and makes it easier to create complex objects.

from abc import ABC, abstractmethod from typing import List

# Carrier Pattern class Carrier: def __init__(self): self._items = []

# Print items in the carrier for item in carrier.get_items(): print(item) The Carrier and Builder patterns are essential tools in software development, enabling more flexibility, maintainability, and scalability. By understanding and applying these patterns, developers can create more efficient and effective solutions to complex problems.