Single and Double Underscore Naming Conventions in Python (Summary)

Now you know about some important Python naming conventions that rely on using the underscore character (_). You’ve learned how to differentiate between public and non-public names in Python code, write safe classes for subclassing purposes, and avoid name clashes in your classes.

In this video course, you’ve:

Learned a few Python naming conventions that rely on using underscores (_)
Differentiated public vs non-public names using a single leading underscore
Used double leading underscores to trigger name mangling in Python classes
Explored other common uses cases of underscores in Python names

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Course Slides (.pdf)

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Sample Code (.zip)

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Congratulations, you made it to the end of the course! What’s your #1 takeaway or favorite thing you learned? How are you going to put your newfound skills to use? Leave a comment in the discussion section and let us know.

00:00 Congratulations, you have finished the course. You have learned a ton of things about single and double underscores and public and non-public use, so let’s just recap what you have learned in this course.

00:12 You have learned to follow the naming conventions in Python for better readability, you know how to differentiate between public and non-public Python attributes, and you can signal the use of non-public objects explicitly.

00:26 Remember, validate helper function? You know how to enable name mangling in multiple inheritance scenarios, and you can define special methods, also known as dunder methods.

00:38 You can avoid a clash with Python’s, reserved keywords and built-ins.

00:44 From my end, I’d like to thank you very much for attending the course, and I hope to see you again soon. Bye.

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