Python In Practice - 15 Projects to Master Python - Class Attributes and Identifier Naming Convention

The video tutorial explains the concept of 'self' in Python classes and the different types of variables, including local, class, private, and strongly private variables. It demonstrates how to create a class, define variables, and access them both inside and outside the class. The tutorial also covers the importance of encapsulation and the use of methods, including predefined methods, while advising against accessing private variables and certain methods outside the class.

What is the purpose of using 'self' in a Python class?

• To create a private variable

• To refer to the instance of the class

• To refer to the class itself

• To define a global variable

Which of the following is true about class variables?

• They cannot be changed once set

• They are only accessible within the class

• They are shared among all instances of the class

• They are unique to each instance of the class

How can you create a private variable in a Python class?

• By using a double underscore before the variable name

• By using a single underscore before the variable name

• By using the 'private' keyword

• By using the 'self' keyword

What is a strongly private variable in Python?

• A variable that is declared with the 'private' keyword

• A variable that cannot be accessed outside the class

• A variable that starts with two underscores

• A variable that starts with a single underscore

What happens if you try to access a strongly private variable outside its class?

• It will cause a syntax error

• It will be accessible without any issue

• It will raise an attribute error

• It will return a default value

Why is it advised not to access certain predefined methods outside their intended context?

• They are not visible outside the class

• They cause errors when accessed

• They are meant to be used by the Python interpreter

• They are not functional outside the class

What is the recommended way to access methods in a Python class?

• Using the class name

• Directly using the method name

• Using the 'self' keyword

• Using the instance of the class