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.