6/20/2023 0 Comments Class inheritance python![]() ![]() = RESTART: C:/Users/L&BPhi/Desktop/Python/inherit2. class Person (object): def init (self, name): self.name name def say (self, stuff): return self.name + ' says: ' + stuff def str (self): return self.name class Lecturer (Person): def lecture (self, stuff): return 'I believe that ' + Person.say (self, stuff) class Professor (Lecturer): def say (self, stuff): return self.name + ' says: '. The new derived class is called the child class. We pass the required arguments to initialize the attributes of the Person and Address classes as well as the grade attribute of the Student class.ĭennis=Student("Chung we can call the various methods such as myname, myage, mygrade, myphone and myemail on the Dennis object to retrieve and display the corresponding information like this: > Inheritance in Python can be used to inherit the properties of the existing class to our new class. ![]() We create a Student object named Dennis.Let’s create an instance of the Student class and access its methods to retrieve and display information.This ensures that the attributes of both base classes are properly initialized.ĭef _init_ (self,name,age,grade,phone,email):Ĭreating an Instance and Accessing Methods: import uuid from langchain.schema import BaseMemory class ChatMemory. Instead of using a constructor method, use the standard pydantic syntax of declaring expected instance attributes on the child class. In the constructor _init_, we explicitly call the constructors of both the Person and Address classes using Person._init_(self, name, age) and Address._init_(self, phone, email). It looks like BaseMemory from langchain is defined as a pydantic model, which has strict rules for defining instance attributes. ![]() The Student class has its own attributes( grade and email) and methods such as mygrade and myemail.This is an example of multiple inheritance, where a class derives from more than one base class. We define a Student class that inherits from both the Person and Address classes. In Python, when a class inherits from multiple parent classes, the order of inheritance determines the resolution order for attribute lookup.Additionally, each class has specific methods such as myname, myage and myphone to retrieve and display the associated information.Ĭreating the Student Class with Multiple Inheritance: In both classes, we define an _init_ method to initialize the respective attributes ( name, age, phone, email).The Person class represents a person with a name and age, while the Address class represents an address with a phone number and email. Python supports inheritance with an use of a minimum number of syntax and semantics. It comes handy in a lot of scenarios while designing or developing a complex software. Let’s start by defining two base classes: Person and Address. Inheritance is a concept in object-oriented programming where a child class (or subclass) derives attributes and behaviors from a parent or sibling class. Inheritance is one of the core topic of object oriented programming. ![]()
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