课程: Advanced Python: Build Hands-On Projects with Design Patterns (2023)

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Creational patterns

Creational patterns - Python教程

课程: Advanced Python: Build Hands-On Projects with Design Patterns (2023)

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Creational patterns

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- [Instructor] There are three different types of design patterns: creational, structural, and behavioral patterns. Creational design patterns are for building objects systematically. The main benefit lies in their flexibility, especially in the area of modifiability and scalability. Here is an example of using creational patterns to make code changes more elegant and effective. Let's say that you're developing software for a pet shop. If you're short-sighted, you may create individual classes for each pet the shop offers as you go. This approach is not scalable. A better option is to have a general class called Pet that contains all the common properties across the pets being handled now and to be added in the future. These common properties include: pet type, such as dog or cat, their name, age, et cetera. When there is a new pet type to be introduced next time, all you have to do is to write a new child class that…

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