[issue44001] typing.Literal: args must be hashable, not immutable

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado :


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pull_requests:  -25771

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[issue44001] typing.Literal: args must be hashable, not immutable

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado :


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nosy: +pablogsal
nosy_count: 4.0 -> 5.0
pull_requests: +25771
pull_request: https://github.com/python/cpython/pull/27228

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[issue44001] typing.Literal: args must be hashable, not immutable

[Ken Jin]

Change by Ken Jin :


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resolution:  -> fixed
status: open -> closed

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[issue44001] typing.Literal: args must be hashable, not immutable

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset ab0a54adad8ddf488ccfb92970be9e4027673d19 by Jelle Zijlstra in 
branch '3.9':
[3.9] bpo-44001: improve Literal documentation (GH-25877). (#25897)
https://github.com/python/cpython/commit/ab0a54adad8ddf488ccfb92970be9e4027673d19


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[issue44001] typing.Literal: args must be hashable, not immutable

[Ken Jin]

Ken Jin  added the comment:

Well something was amiss: the 3.9 backport PR ;-).

Sorry for closing this issue too early. I didn't notice there was still one 
more to go.

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resolution: fixed -> 
status: closed -> open

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[issue44001] typing.Literal: args must be hashable, not immutable

[Jelle Zijlstra]

Change by Jelle Zijlstra :


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pull_requests: +24569
pull_request: https://github.com/python/cpython/pull/25897

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[issue44001] typing.Literal: args must be hashable, not immutable

[Ken Jin]

Ken Jin  added the comment:

Jelle, thanks for fixing up the docs. You're right here - anything that can be 
an element in a frozenset or used as a key in a dict works. And the current 
docs for sets says that means anything hashable: 
https://docs.python.org/3/library/stdtypes.html#set-types-set-frozenset

If you feel anything's amiss. Please don't hesitate to re-open this issue.

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nosy: +kj
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue44001] typing.Literal: args must be hashable, not immutable

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset 2046fb35e4e0986523bd0f6214fc318a414c8b97 by Miss Islington (bot) 
in branch '3.10':
bpo-44001: improve Literal documentation (GH-25877) (#25882)
https://github.com/python/cpython/commit/2046fb35e4e0986523bd0f6214fc318a414c8b97


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nosy: +lukasz.langa

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[issue44001] typing.Literal: args must be hashable, not immutable

[miss-islington]

Change by miss-islington :


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nosy: +miss-islington
nosy_count: 1.0 -> 2.0
pull_requests: +24557
pull_request: https://github.com/python/cpython/pull/25882

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[issue44001] typing.Literal: args must be hashable, not immutable

[Jelle Zijlstra]

Change by Jelle Zijlstra :


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keywords: +patch
pull_requests: +24554
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/25877

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[issue44001] typing.Literal: args must be hashable, not immutable

[Jelle Zijlstra]

New submission from Jelle Zijlstra :

After the changes from bpo-42345, the Literal documentation claims that 
"Literal objects will now raise a TypeError exception during equality 
comparisons if one of their parameters are not immutable." But in fact it's 
*unhashable* types that raise an error; mutable but hashable types such as 
functions or custom objects work fine.

I'll submit a PR for this but may wait until GH-25787 is resolved.

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assignee: Jelle Zijlstra
components: Documentation
messages: 392608
nosy: Jelle Zijlstra
priority: normal
severity: normal
status: open
title: typing.Literal: args must be hashable, not immutable
versions: Python 3.10, Python 3.9

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