Stop Using Print: A Beginner’s Guide to Python Logging
When your code breaks, your first instinct is probably to add print("HERE!") or print(variable) to see what’s happening. This Python Logging Guide will help you…
How to Fix: TypeError: can only concatenate str (not “int”) to str
Python is strongly typed. It refuses to guess what you mean if you try to combine different data types, often leading to a TypeError can…
Beginner Python Project: Build a Text-Based Adventure Game
Before graphics, games were played entirely with text. You’d read a description and type what you wanted to do: “Go North”, “Take Sword”. Now, creating…
Python Lambda Functions: Anonymous Functions Explained
Sometimes you need a tiny function for just one quick task. Python Lambda Functions are perfect for these occasions. Writing a full def my_function(): block…
How to Fix: OSError: [Errno 22] Invalid argument (File Paths)
If you are coding on Windows, you have likely encountered the frustrating OSError [Errno 22] error when trying to read or write files. This error…
Intermediate Python Project: Build an Amazon Price Tracker
Following up on our Web Scraping 101, let’s build something useful: a Python Price Tracker script that checks a product price and tells us if…
Working with JSON in Python: Reading, Writing, and Parsing
In this Python JSON Guide, you will learn how JSON (JavaScript Object Notation) is the standard format for sending data across the web. If you…
Python Decorators Explained: How to Wrap Your Functions
You’ve seen them before. In Flask, you use @app.route("/"). In Django, you might see @login_required. These are Decorators, and understanding Python decorators can significantly enhance…
Django Forms: The Easy Way to Handle User Input
HTML forms are painful. You have to write the <input> tags, handle the POST request, validate that the user didn’t leave fields blank, and show…
Your First Machine Learning Model: Linear Regression with Scikit-Learn
Machine Learning (ML) often sounds like magic, but at its core, it is just math. It is about finding patterns in data and using them…
![3D illustration of a file path blocked by illegal characters causing an OSError [Errno 22] Invalid Argument in Python.](https://pythonprohub.com/wp-content/uploads/2026/01/fix-oserror-errno-22-invalid-argument-file-paths-768x429.png)
