Why no list as dict key?

[Lars Liedtke]

Thx, didn't see it that way yet.


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Lars Liedtke
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Am 25.04.22 um 15:54 schrieb Peter J. Holzer:
> On 2022-04-25 15:13:19 +0200, Lars Liedtke wrote:
>> May I stupidly ask, why one would want to use an iterable (even immutable)
>> as dict key?
> A string is also an immutable iterable, so this is probably even the
> most common case.
>
> As for more complex data structures:
>
> * Tuples or immutable dicts are a good fit if want to group records by
>    subset of their attributes (think "group by" in SQL)
>
> * Objects in general are often though of as units, even if they have
>    composite values and you might want to look up something by that
>    value.
>
>          hp
>
>