OOP - Python

OOP

100

What is OOP?

Programming using classes and objects.

200

What is the difference between Class and Object?

Class → blueprint
Object → instance of the class

300

Name 3 pillars of OOP.

• Inheritance

• Encapsulation

• Polymorphism
  (+ Abstraction)

400

What is Inheritance?

When a class inherits properties and methods from another class.

500

What is Method Overriding?

When a child class redefines a method from the parent class.

Python Basics

100

Surrrrrrrrrrrrrrrrrprrrrrrrriseeeeeeeeeee

Minus

200

Which method runs automatically when creating an object?

__init__

300

What does self represent?

The current object.

400

What function is used to get the length of a list?

len()

500

What keyword is used to create a function in Python?

def

Data Structures

100

Which structure does not allow duplicates?

Set

200

Surprrrrrrrrrrrrrrrrrrrriseeeeee

Bounes

300

Which structure is ordered but immutable?

Tuple

400

Which data structure is best for storing multiple students?

List

500

Which structure allows fast membership checking and no duplicates?

Set

Code Reading(what is the output)

100

x = 10

print(x)

10

200

numbers = [1,2,3]

numbers.append(4)

print(numbers)

[1,2,3,4]

300

for i in range(3):

    print(i)

0
1
2

400

class Student:

    def __init__(self,name):

        self.name = name

s1 = Student("Ali")

s2 = Student("Sara")

print(s1.name)

print(s2.name)

Ali
Sara

500

class Animal:

    def speak(self):

        print("Animal sound")

class Dog(Animal):

    def speak(self):

        print("Bark")

d = Dog()

d.speak()

Bark

Debugging

100

class Cat

    pass

missing :

200

numbers = (1,2,3)

numbers.append(4)

Tuple cannot use append

300

if x = 5:

    print("yes")

 Should be ==

400

class Car:

    def __init__(brand):

        self.brand = brand

Missing self

500

class Student:

    def __init__(self,name):

        name = name

The attribute is not assigned to the object.