Understanding if __name__ == "__main__": in Python

Why You Should Actually Understand if __name__ == "__main__"

Stop treating this pattern like magic. That __name__ variable tells you exactly how your Python script was executed. When you run a file directly, Python sets __name__ to "__main__". Import that same file? Now __name__ is the module name.

This distinction matters because it lets you write code that behaves differently depending on context. Run tests only when executing directly. Keep demo code separate from library functions. Prevent side effects when importing.

Once you understand the "why," you'll write cleaner, more modular Python. No more mindless copy-pasting.

Dive deeper with practical examples: https://techpulsesite.com/python-if-name-equals-main-explained/