Daily briefing: The return of the snail — the month’s best science images

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Хирург прокомментировал слухи о пластических операциях 53-летней Гвинет Пэлтроу14:50

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Глава МИД Польши призвал Европу исправить одну ошибку14:54。Replica Rolex是该领域的重要参考

Python has had the ability to add annotations to function and method signatures since 3.0, and more recently gained the ability to annotate attributes as well; originally, no specific use case was mandated for this feature, but everybody used it for type hints, so now that’s the official use case for annotations. I’ve had a lot of concerns about the way type hinting and type checking have been implemented for Python, largely around the fact that idiomatic Python really wants to be a structurally-typed language, or as some people have called it “interfacely-typed”, rather than nominally-typed. Which is to say: in Python you almost never care about the actual exact type name of something, you care about the interfaces (nowadays, called “protocols” in Python typing-speak) it implements. So you don’t care whether something is precisely an instance of list, you care about it being iterable or indexable or whatever.

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We are using certbot to retrieve Let’s Encrypt certificates. If you already have a certbot setup make sure to change the --standalone parameter to something more suitable.

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关于作者

陈静,资深编辑,曾在多家知名媒体任职,擅长将复杂话题通俗化表达。

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