Python Code Examples

This site presents a comprehensive list of Python code examples, sorted by different programming concepts. It covers basic concepts, control structures, functions, lists, classes and objects, inheritance and polymorphism, file operations, data structures, sorting algorithms, mathematical functions, threads, exception handling, machine learning (ML), pyodbc, and datetime module. Each category has several code examples that illustrate a particular concept.

For instance, the category “Python Basics” has examples such as arithmetic operators, comments, data types, input/output, and string methods.

Similarly, the category “Control Structures in Python” has examples of if-else statements, loops, and ternary operators. The webpage also presents examples of more advanced concepts, such as creating and using classes, inheritance, file operations, and threads.

Overall, this list serves as a useful reference for programmers who want to learn Python or to improve their skills.

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Python Introduction

Getting started
How do I handle errors and debugging in Python?
How do I work with modules and packages in Python?
How to install Python and pip on windows, linux and macOS
Interesting FAQs for Python Programming
Is Python beginner friendly?
Is Python dynamically typed?
What are Python generators and how do they work?
What are the advantages of Python over Java and C++?
What are the differences between Python 2 and Python 3?
What are the main data structures in Python, and how do I use them?
What is Python? An Overview
What is the difference between __str__ and __repr__ in Python?
What is the difference between a shallow copy and a deep copy in Python?

Python Basics

A Comprehensive Guide to the Programming Basics of Python
Arithmetic Operators in Python
Basics
Bitoperators in Python
Comments in Python
Conversion Programs
Data types in Python
Dictionary (dict) methods in Python
Escape Sequences – Special Characters
Hello world
Input / Output in Python
Operators in Python
Organizing Modules into Packages
Python Basics Cheat Sheet
Python Code Example: Check Password Strength
Python Code Example: Convert Celsius to Fahrenheit
Python Code Example: Convert Decimal to Binary Number
Python Code Example: Convert Decimal to Hexadecimal Number
Python Code Example: Convert Decimal to Octal Number
Python Code Example: Convert specific Datatype to Integer
Python Code Example: Enhanced Password Validator
Relational and Logical Operators in Python
Setting specific data type in Python
String Methods in Python
Ternary Operator
Understanding Python Modules
Variables in Python
Why Python? What is it used for?

Control Structures in Python

Empty blocks (pass command)
If else Statement with Logical Operators
If-else syntax
Loops syntax
Multi Branches in Python
Nested if-else Statement in Python
Python Code Example: check if a number is positive or negative
Python Code Example: Check Leap Year in if else Statement
Python Code Example: Christmas Tree Pattern
Python Code Example: Double Nested for-loop
Python Code Example: Floyd’s Triangle
Python Code Example: Hourglass Pattern
Python Code Example: Left Arrow Pattern
Python Code Example: Nested for-loop
Python Code Example: Pattern Reverse
Python Code Example: Right Arrow Pattern
Python Code Example: simple if-else statement
Python Code Example: Simple Pattern
Python Code Example: Triangle Pattern
Python Control Structures Cheat Sheet
Python Control Structures Introduction
Usage of the Ternary Operator for Grade Determination

Functions in Python

Abstract Base Classes (ABC) in Python
Calling Functions
Closures in Python
Decorators: Enhancing Functions in Python
Definition and declaration
Function parameters
Generators in Python
Higher-Order Functions and Decorators
Instance, class and static methods
Partial Functions: Using functools.partial to Fix Arguments
Passing objects to functions
Python Code Example: calculate cross sum (iterative and recursive)
Python Code Example: greatest common divisor (recursive)
Python Code Example: least common multiple
Python Code Example: passing list to method
Python Code Example: simple login
Python Code Example: tower of hanoi (recursive)
Python Code Example: volume and surface area of a ball
Python Code Example: volume and surface of a cube
Python Functions: Introduction
Recursion in Python
Recursion with Memoization
Using functools for Function Caching

Lists in Python

Accessing List Elements
Adding Elements to Lists
Advanced List Operations: Comprehensions, Mapping, and Reducing
Advanced List Operations: Slicing, Merging, and Itertools
append() – Add an Entry to the end of a List
clear() – Delete all Entries in List
Concatenating Lists
copy() – Copy List
count() – Return the Number of existing List Entries
extend() – Add all List Entries to another List
filter() – Filtering Elements in a List
Finding Elements in a List
Get List Length
index() – Search for Element in a List and return the Index
insert() – Insert a List Entry at the given Index Number
Introduction Python Lists
List and Lambda Functions – map(), filter(), reduce()
List Copying
List Creation and Initialization
List Memory Efficiency
List methods
List Repetition
map() – Transforming Data in a List
pop() – Delete a List Entry by Index (pop)
Python Code Example: Arithmetic Functions on Lists
Python Code Example: Even Numbers in a List
Python Code Example: Finding Pairs with Target Sum
Python Code Example: Finding the Index of an Element in a List
Python Code Example: Flattening a Nested List
Python Code Example: Join two Lists
Python Code Example: Length of a List
Python Code Example: List in Reverse Order
Python Code Example: Odd Numbers in a List
Python Code Example: Prints out Indices of all Pairs of Numbers
Python Code Example: Removing Duplicates from a List
Python Code Example: Smallest and Largest Number in List
Python Code Example: Zipping Lists Together
Python List: Syntax
remove() – Delete a List Entry by Value
Removing Elements from Lists
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Object-Oriented Programming in Python

Attributes and Methods
Classes and Objects
Composition: Relationship between Classes
Constructor
Creating Immutable Classes with __slots__
Destructor
Encapsulation
Introduction to Object-Oriented Programming in Python
Metaclasses: Customizing Class Creation
Python Code Example: Area of ​​a Rectangle
Python Code Example: Bank Account
Python Code Example: Booking System for Conference Rooms
Python Code Example: Creating Items with Counter
Python Code Example: Data abstraction – public, private, protected
Python Code Example: Introducing a Person
Python Code Example: Vending Machine
Python Code Example: Volume of a Cube
Self Parameter
Special Methods (Magic Methods)
Understanding Properties
Using __call__: Making Objects Callable

Inheritance and Polymorphism in Python

Hierarchical inheritance
Hybrid inheritance
Introduction to Inheritance and Polymorphism in Python
Multilevel inheritance
Multiple inheritance
Operator Overloading
Polymorphism in Collections
Polymorphism with Inheritance
Single inheritance
The Role of Abstract Base Classes (ABCs)
Understanding Polymorphism in Python
Using Default Arguments

Fileoperations in Python

Closing a File
Common Exceptions in File Operations
Introduction to Fileoperations in Python
Opening a File
Python Fileoperations: check if file exists
Python Fileoperations: check if two files have the same content
Python Fileoperations: copy lines from one file to another
Python Fileoperations: copy the file name and content of 10 files in another
Python Fileoperations: read the file size and type of an image
Reading from a file
Renaming and removing a File
Writing to a file

Data Structures in Python

Advanced Tuples in Python: A Detailed Example
Data Manipulation with Tuples
Data Structures Advanced Features
Detailed Overview of Python Data Structures
Email Extraction and Categorization
Understanding Data Structures

Sorting Algorithms in Python

Bubble sort algorithm
Counting sort algorithm
Cycle sort algorithm
Heap Sort algorithm
Insertion sort algorithm
Intro sort algorithm
Introduction to Sorting Algorithms in Python
Merge sort algorithm
Python build in sorting Algorithms
Quick sort algorithm
Radix sort algorithm
Selection sort algorithm
Shell sort algorithm
Tim sort algorithm
Time complexity overview

Errors and Exception Handling in Python

AttributeError – invalid attribute reference
Catching multiple exceptions
Chained Exceptions (from keyword)
Debugging with Exception Handling
Exception chaining
Exception Handling in Python: Introduction
Handling SystemExit and KeyboardInterrupt
How Python Handles Exceptions
Image Resizer in Python
Logging Exceptions
NameError – identifier is not found in the namespace
OverflowError – exceeds the maximum possible value
Overview standard exceptions
Password Generator in Python
Raising exceptions
RSS (Really Simple Syndication) Feed Reader in Python
Show error information in Python
Suppressing Exceptions – Using contextlib.suppress()
The Unittest Module and Exceptions
TypeError – invalid operation on data type
User-defined exceptions
What are Exceptions?
ZeroDivisionError – division by zero

Mathematical Functions in Python

Arithmetic sequence
Basic mathematical modules
Exponential and logarithmic math functions
Fibonacci sequence
Geometric number sequence
Incremental sequence
Introduction to Mathematical Functions / Sequences
Mathematical rounding
Prime number sequence
Square number sequence
Triangular number sequence
Trigonometric math functions

Threads in Python

Advanced Threading Techniques
Challenges and Best Practices
Creating and Managing Python Threads
Introduction to Multithreading in Python
Python Code Example: join threads
Python Code Example: start threads in correct order (join-Keyword)
Python Code Example: start threads randomly (start-Keyword)
Python Code Example: step by step execution of threads
Real-world Applications of Python Threads
Synchronization and Coordination
Understanding Threads in Python

System Functions in Python

Create new directory
Exploring the os Module in Python
Get operating system name and type
Get system date
List files and sub-directories
More operating system functions
Remove existing directory
Rename directory or file
Shutdown / restart computer

pyodbc Module

Advanced Database Operations with pyodbc
Establish connection to SQL Server
Introduction to pyodbc Module
Joining tables and executing parameterized queries
MariaDB Database Connections
MySQL Database Connections
Running SQL Insert query in Python code
Running SQL Select query in Python code
Running SQL Update query in Python code
Running the Query in SQL from Python

datetime module

Calculate age in years and days
Calculating time differences with pytz module
Calculation of remaining time until birthday
Calculation of time difference via timedelta obejct
Convert string to datetime object
Creating date objects
Creating time objects
Get current date (now)
Get current datetime, date and time
Introduction to datetime Module
Set timezone via pytz module
Working with strings

Drawing with Python

Introduction to Drawing with Python
Matplotlib – create a 3D surface plot
Matplotlib Python library
Pillow – blending multiple images together
Pillow (Python Imaging Library – PIL) library
Pygame – create a simple interactive game
Pygame Python library
Some other drawing libraries
Turtle – create a colorful and intricate geometric pattern
Turtle Python library
Which library should I use?

Cryptographic Libraries in Python

Hashing and asymmetric / symmetric encryption (cryptography)
Hashing passwords (hashlib)
Hasing passwords (bcrypt)
Introduction to Cryptographic Libraries
Python’s Bcrypt Library
Python’s Cryptography Library
Python’s hashlib Library

Machine Learning in Python

Choose a Model
Deploying a machine learning model
Evaluate the Model
General information about Machine Learning
How to use Scikit-learn Python Library?
How to use TensorFlow Python Library?
Machine Learning Introduction
Parameter Tuning
Prepare your Data
Scikit-learn Python Library: APIs
Scikit-learn Python Library: Introduction
Scikit-learn: Custom Model Pipelines with Feature Engineering
Supervised learning: Decision Trees
Supervised learning: Linear Regression
Supervised learning: Support Vector Machines (SVM)
TensorFlow Python Library: APIs
TensorFlow Python Library: Introduction
Train the Model
Using machine learning in Python

Real World Scenarios in Python

Advanced Sales Data Analysis in Python
Automated Data Analysis and Reporting System
Real-Time Fraud Detection System
Retail Sales Analysis and Forecasting
Simple Chat Server: A basic chat server using sockets
Stock Price Prediction using Machine Learning
WebSocket Server and Client in Python

Gaming in Python

Connect Four Game in Python
Create a Pong Game in Python
Minesweeper Game in Python
Python Hangman Game: Code, Play, and Learn
Python Snake Game Tutorial
Simple Python Rock, Paper, Scissors Game
Space Invaders Game in Python
Tetris Game in Python

Asyncio in Python

Advanced Asyncio Features
Best Practices for Asyncio Programming
Core Components of Asyncio
Error Handling and Debugging
Integration with Other Libraries
Introduction to Python’s Asynchronous Programming
Practical Examples
Setting Up Asyncio in Python
Tasks and Futures
Understanding Coroutines
Working with the Event Loop