Python · Senior · Theory

Walk me through how Python looks up an attribute when you access obj.attr. Where do descriptors fit into this, and why does property work the way it does?

~4 min by voice

How to approach it

The interviewer checks whether the candidate understands the actual algorithm of object.__getattribute__ and the priorities of data/non-data descriptors relative to the instance __dict__, and whether they can use that to explain property, bound methods, cached_property and __getattr__, rather than just saying "first the object, then the class".

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Topics

data model descriptors

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~4 min