In-Depth Python OOP

In-Depth Python OOP

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1. OOP Concepts

Let's start! The Object-Oriented Programming basic concepts are waiting for you here! In this section, you will get acquainted with the most important concepts for understanding Object-Oriented Programming.

What is Object-Oriented Programming?

Challenge: User

Challenge: User Auth

2. Inheritance

Inheritance - the first of the OOP principles. The entities can be inherited from other ones. You learn how it works in code here.

What is Inheritance?

Challenge: Admin

Multiple Inheritance

Method Resolution Order

Useful Functions

3. Encapsulation

Inheritance - the second of the OOP principles. The attributes and methods can be closed inside the class and used by the class only. Here you learn how to code with different access modifiers.

What is Encapsulation?

Private

Challenge: Protected Password

@property.setter

Challenge: Password Validation

4. Polymorphism and Abstraction

Polymorphism and abstraction are the third and fourth of the OOP principles. These principles are not easy to understand. Here you will get to know them in the simplest ways.

What is Polymorphism?

Challenge: AuthMixin

What is Abstraction?

Abstract Method

Challenge: AbstractAdmin

5. Magic Methods

The magic methods make sandbox from Python. It's a unique Python tool you can't see in other languages. Here you learn how to use these methods and about the flexibility that they bring to Python.

What are magic methods?

Math Magic Methods

Comparison Magic Methods

Challenge: Users Representation and Comparison

Зміст курсу

In-Depth Python OOP

Private

The private access modifier is used to encapsulate attributes and methods within a class. Private attributes and methods are not accessible to subclasses and are intended to be used only within the class itself. They provide a way to hide implementation details and enforce encapsulation.


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class Parent:
    __attribute = "Private"
  
    def get_from_parent(self):
        print(self.__attribute)

class Child(Parent):
    def get_from_child(self):
        print(self.__attribute)

instance = Child()
instance.get_from_parent()
instance.get_from_child() # AttributeError

You can utilize parent methods to access parent private attributes/methods, which helps in reducing dependencies.

Python is a highly flexible programming language, allowing you to access private attributes using the following syntax:

But this is a BAD PRACTICE that specific syntax tells us.

Look at the example:


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class SomeClass:
    __value = "Privated value"

instance = SomeClass()

print(instance._SomeClass__value)
print(SomeClass._SomeClass__value)

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