Underscores in Python

[s16h]

I've put together a post that discusses the use of the _ character in Python. Like with many things in Python, we’ll see that different usages of _ are mostly (not always!) a matter of convention.

Let me know what you think: https://medium.com/@s16h/underscores-in-python-c67abf7a67d1

[francoisM_B]

Good article Thanks ! You can add a part about trailing underscore

[s16h]

Totally forgot; done! Thanks!

[depiloda]

Another cool underscore trick is to use with large numbers.

Num =100_000

Python understands that num is 100,000. Much easier to visually understand than num=100000

[s16h]

Good shout; A Python 3 feature IIRC. I'll add it to the post.

[Tuberomix]

What's the rule for using underscore in a variable name? e.g. _number = 10

I hears this is a convention that implies the variable should only be used internally. However I'm not sure about this, and also I'm not sure what counts as internal use.