class Animal:
    def sound(self):
        print("Animal makes sound")

class Dog(Animal):
    def sound(self):
        super().sound()
        print("Dog barks")

d = Dog()
d.sound()

Animal makes sound
Dog barks

try:
    file = open("data.txt", "r")
except FileNotFoundError:
    print("File not found")
finally:
    print("Cleanup operations executed")

File not found
Cleanup operations executed

import csv

def validate_row(row):
    return all(row)

data = [
    ["John", 28, "Toronto"],
    ["", 35, "Berlin"]
]

with open("validated.csv", "w", newline="") as file:
    writer = csv.writer(file)
    for row in data:
        if validate_row(row):
            writer.writerow(row)

pip list

class X:
    pass

class Y(X):
    pass

class Z(X):
    pass

class W(Y, Z):
    pass

print(W.mro())

[<class '__main__.W'>, <class '__main__.Y'>, <class '__main__.Z'>, <class '__main__.X'>, <class 'object'>]

class Person:
    pass

p1 = Person()
print(p1)

<__main__.Person object at 0x0000020644C5D010>

name,age,city
Alice,25,New York
Bob,30,London

# file: math_utils.py
def add(a, b):
    return a + b

my_package/
│── __init__.py
│── module1.py
│── module2.py

print(10 / 0)  # Raises ZeroDivisionError