How Python’s id() Reveals What’s Really Happening in Memory
Ever noticed how id(obj) in Python doesn’t show the value, but where it lives in memory? 🧠
Same values can have different ids, and sometimes the same id shows up because of caching.
It’s Python’s way of saying: “Don’t just look at the face, check the address.”
Meet the Walrus Operator (:=) in Python
The Python Walrus Operator (:=) lets you assign a value inside an expression. It reduces repetition, speeds up common patterns (loops, filtering, regex), and keeps code tidy—when used thoughtfully.
The Hidden Uses of the _ Variable in Python
That little underscore (_) in Python isn’t meaningless. From storing results in the REPL to acting as a throwaway variable in loops, ignoring values in unpacking, and even handling translations in Django — _ is one of Python’s most versatile tools.
Why Python Scripts Have This Weird if __name__ == “__main__”: Line
Ever wondered why so many Python scripts end with if __name__ == “__main__”:?
It’s not just a quirky Python thing — it’s a powerful feature that decides whether your file runs as the main program or behaves quietly as an imported module. In this post, we’ll break it down with simple examples, real-life analogies, and why it makes your code cleaner and more reusable.
Python’s sitecustomize.py & usercustomize.py — The Hidden Startup Files You Didn’t Know About
Every time you start Python, two special files might run — without you typing a single command.
They’re called sitecustomize.py and usercustomize.py, and they can be game-changers for global configuration… or a nightmare if misused.
Python __main__.py: How to Run a Folder Like a Script
Did you know Python can run an entire folder like it’s a .py script?
It’s possible with __main__.py, a special file that acts as the entry point for a package or even a .zip archive. In this guide, we’ll explore what __main__.py is, how it works, why it’s useful, and the best practices for using it.
Python __init__.py: The Tiny File That Turns a Folder into a Package
__init__.py is the switch that tells Python, “this folder is a package.” Learn what it does, when it can be empty, how to control imports with __all__, and why it still matters even with namespace packages in Python 3.3+.
.pth Files: Must-Have Secrets for Effortless Python Imports
Discover the hidden power of .pth files in Python, your secret weapon for effortless library imports! These unassuming files can expand your import path, streamline your development process, and help you manage dependencies like a pro.
__pycache__ Explained: Must-Have Guide for Python Beginners
If youve ever wondered about the mysterious __pycache__ in Python, youre not alone! This hidden gem stores compiled bytecode, speeding up your projects and making Python run more efficiently, so let’s unravel its secrets together.
Stop Hardcoding Secrets: Exclusive .env Files Made Easy
Are you tired of exposing your sensitive information in your code? Discover how to effortlessly utilize env files in Python to keep your API keys and credentials secure, all while keeping your code clean and maintainable!