课程: Python: Design Patterns

免费学习该课程！

今天就开通帐号，24,700 门业界名师课程任您挑！

Builder example

Builder example - Python教程

课程: Python: Design Patterns

开始一个月试用 购买团队方案

Builder example

“

- [Instructor] In this exercise, our goal is to build a car object and print its details. We'll do so by using the builder patterns, various participants, including director, abstract builder, concrete builder, and the object being built. The abstract builder class, called builder here, creates a car object and keep it as its attribute. The concrete builder class, called Skylark builder, inherits from the abstract builder class and provides methods to be used by the director class. Let's add one more method to the concrete builder class, which is the add_engine method. So type def add_engine, parentheses, self, colon, type self.car.engine, and set it to "Turbo Engine." The next part is to go back to the director class and complete the definition of the construct_car method. The director object is what actually builds a car. Let's create a new car object to get started. Type self._builder. This attribute is where the concrete builder object is stored, therefore type.create_new_car…

内容