class User:
    pass

user = User()

print(isinstance(user, User))  # True
print(type(user))              # <class '__main__.User'>

True
<class '__main__.User'>

class Student:
    school = "Global Academy"  # Class variable

    def __init__(self, name):
        self.name = name        # Instance variable

s1 = Student("Alice")
s2 = Student("Bob")

print(s1.school)
print(s2.school)

Global Academy
Global Academy

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

p = Person("Bob", 30)
print(p.name, p.age)

Bob 30

class Car:
    def __init__(self, brand):
        self.brand = brand

c1 = Car("Toyota")
c2 = Car("Tesla")

print(c1.brand)
print(c2.brand)

Toyota
Tesla

class Person:
    name = "Alice"
    age = 25

p = Person()
print(p.name)
print(p.age)

Alice
25

class Product:
    def __init__(self, price):
        self.price = price

item = Product(100)

del item.price
# del item  # Deletes the object entirely

class Person:
    def __init__(self, name):
        self.name = name

    def greet(self):
        return f"Hello, my name is {self.name}"

p = Person("Alice")
print(p.greet())

Hello, my name is Alice

class Employee:
    def __init__(self, name):
        self.name = name

emp = Employee("John")
emp.name = "Michael"

print(emp.name)

Michael

class BankAccount:
    def __init__(self, owner, balance):
        self.owner = owner
        self.balance = balance

    def deposit(self, amount):
        self.balance += amount

    def withdraw(self, amount):
        self.balance -= amount

account = BankAccount("Alice", 1000)
account.deposit(500)
print(account.balance)  # Output: 1500

1500

class Person:
    pass

p1 = Person()
print(p1)

<__main__.Person object at 0x0000020644C5D010>