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5 points

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?

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1 point

Return undefined.

Typescript.

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

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1 point

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.

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0 points

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

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3 points

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

Javascript / Typescript.

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3 points

Well, yeah, I thought about later. Lua does the same.

The other questions are still valid, though.

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