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Documentation improvement regarding returned datatype of pandas.unique #47426

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pavelsr opened this issue Jun 19, 2022 · 2 comments
Open

Documentation improvement regarding returned datatype of pandas.unique #47426

pavelsr opened this issue Jun 19, 2022 · 2 comments
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@KeiOshima
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@pavelsr
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pavelsr commented Jun 19, 2022

It's not clear in which case pandas.unique returns numpy.ndarray and in which case it returns ExtensionArray

pandas/pandas/core/algorithms.py

Line 351 in 4bfe3d0

numpy.ndarray or ExtensionArray

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Thanks for reporting this @pavelsr. Feel free to have a look at the code and improve the docs when you understand this.

This was referenced Jul 15, 2022
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@KeiOshima
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take

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