Object-oriented programming in Python.
✍️ 3 exercises + code challenge in this lessonPython is an object-oriented language. A class is a blueprint; an object is an instance of it.
__init__() is the constructor; it runs when an object is created.self refers to the current object and is the first parameter of every method.__str__() defines how the object is printed.Mastering Python Classes & Objects helps you write clean and reliable Python code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
class Student:
school = "CodesInTech Academy" # class attribute
def __init__(self, name, marks):
self.name = name # instance attributes
self.marks = marks
def grade(self):
return "A" if self.marks >= 85 else "B" if self.marks >= 70 else "C"
def __str__(self):
return f"{self.name} ({self.marks}) - grade {self.grade()}"
s1 = Student("Hina", 91)
s2 = Student("Bilal", 74)
print(s1)
print(s2)
print(s1.school)Check what you learned in “Python Classes & Objects”.
Name the constructor method.
class Car:
def (self, brand):
self.brand = brand
What does self refer to?
Create a class Dog with an __init__(self, name) and a method bark() that returns name + " says Woof". Print Dog("Moti").bark().
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