Learn Code Quiz: Data Science | Classes, Constructors, Objects and Inheritance | Python

Are you eager to delve into the fascinating world of Data Science and Python programming? Look no further! Welcome to our comprehensive online tutorials where you'll learn everything you need to know about Classes, Constructors, Instances (Objects), Child Classes, and Inheritance, all while mastering Python in just a week!

🔍 Course Modules:
1️⃣ Understanding Classes: Demystifying the concept of classes and their significance in object-oriented programming.
2️⃣ Constructors: Master the art of creating object instances with constructors.
3️⃣ Instances (Objects): Explore the world of instances and their vital role in Python programming.
4️⃣ Child Classes: Discover how child classes inherit properties from parent classes, enhancing code reusability.
5️⃣ Inheritance: Dive deep into inheritance and how it empowers you to build powerful, efficient code structures.

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"A class Animal is created using the class definition class Animal:. The __init__ method, also known as the constructor, takes three parameters: self, name, and age, where self refers to the instance of the object being created.

When we create an instance (object) of the class, for example, animal1 = Animal('dog', 5), Python allocates memory for the object and automatically calls the __init__ method, passing animal1 as self, and 'dog' and 5 as arguments for name and age, respectively . The self parameter is automatically set to reference the newly created instance.

So, in summary, the __init__ method initializes the attributes of the instance with the values passed during the object creation, and the self parameter allows us to access and set instance-specific attributes within the class methods."

# Class definition for Animal
class Animal:
# Constructor (Initializing the instance attributes)
def __init__(self, name, age):

# Creating an instance (Object) of the Animal class
animal1 = Animal('dog', 5)

# Printing the attributes (Instance) of animal1 (Object)

*************************************************

class Animal:
def __init__(self, species):

class Dog(Animal):
def __init__(self, name, age):
super().__init__('Dog')

# Creating an instance of the Dog class
dog1 = Dog('Buddy', 5)

# Printing the attributes of dog1

In this example, we have a parent class called Animal, which has a constructor method __init__. The __init__ method of the Animal class takes one parameter, species, and initializes the species attribute of the instance with the value of the species argument.
Now, we define a child class called Dog, which inherits from the Animal class using the syntax class Dog(Animal):. The child class Dog has its constructor, which takes two parameters, name and age.

When a new object of the Dog class is created, the __init__ method of the child class Dog is automatically called. However, this constructor in the Dog class doesn't take the species parameter directly, unlike the parent class Animal. So, to pass the necessary information to the parent class constructor, we use super().__init__('Dog').

The line super().__init__('Dog') calls the constructor of the parent class Animal and explicitly passes the value 'Dog' as the species argument. This ensures that the species attribute of the Dog instance is set to 'Dog', which makes sense since we are creating a specific instance of a dog.

As a result, dog1 will have the species attribute set to 'Dog', name attribute set to 'Buddy', and age attribute set to 5. The object dog1 is an instance of the Dog class, which inherits the species attribute from the parent class Animal and adds its own name and age attributes.

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