• cocobean
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    1 year ago

    I had to use Python for a bit at work and it was confusing

    pipenv, venv, virtualenv, poetry…wtf is all this shit

    a.b vs a['b'] vs a.get('b')…wtf is a KeyError

    • richieadler@lemmy.myserv.one
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      1 year ago

      What happens in other languages you use when you try to access a non-existing key for a hash/map/dict?

      What language do you use that accessing an object attribute is the same that accessing a dict key?

      What knowledge do you have (or not) that KeyError is a mistery to you?

      • Hallainzil@lemmy.world
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        1 year ago

        What language do you use that accessing an object attribute is the same that accessing a dict key?

        Javascript / Typescript.

      • cocobean
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        1 year ago

        Return undefined.

        Typescript.

        Why error? Just return undefined. Simple, no try/catch needed.

        • richieadler@lemmy.myserv.one
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          1 year ago

          Because that’s prone to errors. And the Zen of Python includes “explicit is better than implicit” and “Errors should never pass silently”. Languages that do otherwise create bad habits.

          • cocobean
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            1 year ago

            Is it? It’s just an optional property. And Typescript will tell you that it’s optional.

      • cocobean
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        1 year ago

        People love to complain about npm and node_modules, but I think they were on to something with the simplicity of it.