Object ---> A bundle of related attributes(variables) and methods(functions)
you need a Class to create many objects
[[Class]] ----> (blueprint) used to design the structure and layout of an object
Ex: creating the car(object)
class Car: <---- class object
def __init__(self, model, year, color, for_sale): <---- constructor
self.model = model
self.year = year
self.color = color
self.for_sale = for_sale
def drive(self): <-----class methods(functions)
print("You drive the car")'
print(f"You drive the {self.model}")
print(f"You drive the {self.color}{self.model}")
def stop(self):
print("You stop the car")
print(f"You stop the {self.model}")
print(f"You stop the {self.color} {self.model}")
def describe(self):
print(f"{self.year} {self.color} {self.model}")
car1 = Car("Mustang", 2024, "red", False)
car2 = Car("Corvette", 2025, "blue", True)
car3 = Car("Charger", 2026, "yellow", True)
print(car1.model)
print(car1.year)
print(car1.color)
print(car1.for_sale)
car1.drive()
car1.stop()
car3.describe()
*Class variables = Shared among all instances of a class Defined outside the constructor Allow you to share data among all objects created from that class
*Instance variables = used only in instances of a class Defined inside the constructor in instance variable, each object has its own version with class variable
Ex:
class Student:
class_year = 2025 <------class variable
num_students = 0
`def __init__(self, name, age):`
`self.name = name` <----- instance variables
`self.age = age`
`Student.num_students += 1`
student1 = Student("Spongebob", 30)
student2 = Student("Patrick", 35)
student3 = Student("Squidward", 55)
student4 = Student("Sandy", 27)
print(f"My graduating class of {Student.class_year} has {Student.num_students} students")
print(student1.name)
print(student2.name)
print(student3.name)
print(student4.name)