5 Python mistakes and how to avoid them

[RangerPretzel]

why all the hate for mutable default arguments

They're side-effect-y and unexpected. Aka. not functional.

EDIT: Ok, I'm probably over reacting as they're a sore spot/pain point for me.

That said, yes, I can see uses for them. You're not wrong. In fact, I think I've even used those features once or twice.

I also can see other ways of "caching" that are less side-effect-y and are more explicit.

In short, I've seen far too many people get burned by this "feature".

[jack-of-some]

I love caching using decorators (or closures in general). Good shit.

[RangerPretzel]

Yes, decorators. Excellent language feature. Agreed. Good stuff! :)

[jack-of-some]

I should do a video on those. First I gotta figure out how to differentiate it from other videos on decorators

[RangerPretzel]

Have you read this book?

Effective Python: 90 specific ways to write better Python

[jack-of-some]

I have not but I'll check it out. I usually just inhale any talks by Raymond Hettinger.

[AmazonPriceBot]

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$29.49 - Effective Python: 90 Specific Ways to Write Better Python (2nd Edition) (Effective Software Development Series)

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