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In my search of a test to check whether two numpy arrays use the same underlying memory, I stumbled across the data attribute of an array. It behaves really weirdly (a.data is a.data returns False), and the documentation says nothing but:

Python buffer object pointing to the start of the array’s data.

So what exactly is the data object of a numpy array and what is it used for?

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  • Most numpy users don't use it (directly). Commented Apr 8, 2020 at 15:03

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The following discussion may be able to shed some more light on your question: What is a Python buffer object pointing to the start of the array’s data?

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thanks for finding that. Saves me from rewriting my answer.

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