{"id":5593,"date":"2022-02-18T04:18:33","date_gmt":"2022-02-18T04:18:33","guid":{"rendered":"https:\/\/studysection.com\/blog\/?p=5593"},"modified":"2022-02-21T06:31:02","modified_gmt":"2022-02-21T06:31:02","slug":"abstract-factory-in-python","status":"publish","type":"post","link":"https:\/\/studysection.com\/blog\/abstract-factory-in-python\/","title":{"rendered":"Abstract Factory in Python"},"content":{"rendered":"

Introduction<\/h2>\n

Design patterns are used to make code more scalable and maintainable. There are different categories of design patterns depending upon the problem it solves. Using design patterns<\/a> it is easy to add new features to existing code without interrupting it.
\nCreational design pattern solves the problem of instantiating the classes and objects in an efficient way. There are various creational design patterns like a factory, abstract factory, builder, prototype, and singleton methods. In this section, we will discuss the abstract factory method.<\/p>\n

Abstract Factory<\/h3>\n

The Abstract Factory method provides developers with a mechanism to create closely related objects without specifying their concrete class.
\nLet’s take an example of an online furniture store, there are different types of furniture like sofa, table, chair, almirah, etc. For every newly added furniture in-store, the developer needs to create a class and manually instantiate their objects which is not a good approach for developers.
\nThis problem is solved by automatic object instantiation using abstract factory methods.<\/p>\n

Example<\/h3>\n

In the following example, the furniture_in_store class handles the instantiation of objects of different furniture classes automatically. We will scale the furniture store to any type of furniture without worrying about the existing code.
\n\"chart\"\/<\/p>\n

class Furniture_at_store:
\n def __init__(self, furniture_factory = None):
\n self.furniture_factory = furniture_factory
\n def show_furniture(self):
\n furniture = self.furniture_factory()
\n print(f'We have {furniture}')
\n print(f'its price is {furniture.Price()}')
\nclass Sofa:
\n def Price(self):
\n return 25000
\n def __str__(self):
\n return \"Sofa\"
\nclass Chair:
\n def Price(self):
\n return 5000
\n def __str__(self):
\n return \"Chair\"
\nclass Table:
\n def Price(self):
\n return 10000
\n def __str__(self):
\n return 'Table'
\nif __name__ == \"__main__\":
\n item_list = [Sofa,Table,Chair]\n for item in item_list:
\n furniture = Furniture_at_store(item)
\n furniture.show_furniture()<\/code><\/p>\n

Advantages<\/strong><\/p>\n