Print Hello World

Print user name

Add two numbers

Swap two variables

Find largest of two numbers

Check even or odd

Find factorial of number

Print Fibonacci series

Reverse digits of number

Check if number is prime

Check palindrome string

Find largest element

Remove duplicates from list

Count vowels in string

Sum digits of a number

Find GCD of two numbers

Power of a number

Check if year is leap year

Count character frequency

Print primes up to N

Check Armstrong number

Check palindrome number

Count digits in number

Print numbers from 1 to N

Print even numbers

Sum of first N numbers

Print multiplication table

Find largest of three numbers

Check positive or negative

Reverse a string

Sort list in ascending order

Find LCM of two numbers

Find second largest element

Perform basic arithmetic

Convert string case

Use lambda expressions

Use map and filter

Build lists concisely

Common dictionary operations

Functions with default arguments

Variable length arguments

Recursive function example

Check if two strings are anagrams

Count word frequency

First unique character

Compress repeating characters

Reverse words in sentence

Flatten nested list

Merge two dictionaries

Stack using Python list

Queue using collections.deque

Union, intersection, difference

Loop with index using enumerate

Zip two lists together

Lazy sequence with yield

Function decorator pattern

Custom context manager with class

Define and use a class

Class inheritance example

Static method inside class

Getter / setter with property

Handle exceptions

Write then read a file

Read CSV with csv module

Serialize and deserialize JSON

Pattern matching with re

Work with dates and times

Generate random numbers

File system with os module

Custom sort using key function

Binary search on sorted list

Quick sort implementation

Merge sort implementation

Singly linked list in Python

Stack using a class

Breadth-first traversal

Depth-first search on graph

Cache results with functools

Singleton using class

Event observer implementation

Custom iterator class

contextlib contextmanager

Python dataclass decorator

Abstract method with ABC

Threading module usage

Async / await with asyncio

Process pool example

Python type annotations

Assignment expression :=

match / case statement (3.10+)

Memory saving with __slots__

Profile performance

SQLite database with sqlite3

HTTP GET with requests library

Minimal FastAPI app

Create and inspect a DataFrame

Create and operate NumPy array

Simple line chart

Train a classifier

unittest test case

Mock functions with unittest.mock

Log messages at different levels

Modern path handling

Define an enumeration

Metaclass basics