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Type hinting in modern Python: The Protocol class (codebeez.nl)
submitted 1 year ago* (last edited 1 year ago) by nikaro@jlai.lu to c/python@programming.dev
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This is like Interface in Go (or Java, i don't speak Java but the article say so).

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[-] NostraDavid@programming.dev 1 points 1 year ago

OK, but why would I use this over ABCs? (Abstract Base Class). Or is it just different?

[-] nikaro@jlai.lu 1 points 1 year ago

From what i understand, Protocol is for custom interfaces that you define (this object must have do_x() method), while ABCs are generic (this object is iterable).

[-] twoframesperminute@mastodon.social 0 points 1 year ago* (last edited 1 year ago)

@nikaro iterable means: has __iter__() method. So there's no real difference, as far as I can see.

[-] nikaro@jlai.lu 1 points 1 year ago

The difference is that with Protocol you can define which method presence you want to ensure. Like i said: custom vs. generic.

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this post was submitted on 15 Sep 2023
35 points (97.3% liked)

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