[`flake8-pyi`] Implement `PYI062` (`duplicate-literal-member`) #11269

tusharsadhwani · 2024-05-03T19:27:49Z

Summary

Implements Y062 from flake8-pyi, mostly adopted from Rule::DuplicateUnionMember (without the | BinOp parts).

Currently DuplicateUnionMember also doesn't have an autofix for Union[] cases, so implementing both together seems like a good idea.

Test Plan

cargo test / cargo insta review

crates/ruff_linter/src/codes.rs

zanieb · 2024-05-03T19:48:57Z

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI062.py

+
+x: Literal[True, False, True, False]  # PYI062 twice here
+
+y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1


Can you add test cases where the inner literal is entirely redundant? e.g.

Literal[1, Literal[1]]
Literal[1, 2, Literal[1, 2]]
Literal[1, Literal[1], Literal[1]]
Literal[1, Literal[2], Literal[2]]
Literal[1, Literal[2, Literal[1]]]

These will be more important for when we add a fix, I think.

It's also good to have coverage for cases like Literal[1, 1, 1] where we should raise the diagnostic twice.

github-actions · 2024-05-03T20:03:35Z

`ruff-ecosystem` results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

ℹ️ ecosystem check detected linter changes. (+15 -0 violations, +0 -0 fixes in 2 projects; 42 projects unchanged)

bokeh/bokeh (+1 -0 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --ignore RUF9 --output-format concise --preview --select ALL

+ src/bokeh/events.py:569:36: PYI062 Duplicate literal member `-1`

python/typeshed (+14 -0 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --ignore RUF9 --output-format concise --preview --select E,F,FA,I,PYI,RUF,UP,W

+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:10239: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:10244: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:10249: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:10254: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:3424: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:5833: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:5838: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:7915: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:7920: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:8172: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/compiler/xla/xla_pb2.pyi:1051:8177: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/core/protobuf/rewriter_config_pb2.pyi:496:918: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/core/protobuf/rewriter_config_pb2.pyi:496:923: PYI062 Duplicate literal member `...`
+ stubs/tensorflow/tensorflow/core/protobuf/rewriter_config_pb2.pyi:496:928: PYI062 Duplicate literal member `...`

Changes by rule (1 rules affected)

code	total	+ violation	- violation	+ fix	- fix
PYI062	15	15	0	0	0

zanieb · 2024-05-03T21:08:32Z

Hm the typeshed ecosystem checks look concerning, do you know what's going on there?

tusharsadhwani · 2024-05-03T21:17:37Z

@zanieb Doesn't seem to reproduce locally at least with copypasting the concerned files :/

dhruvmanila · 2024-05-06T09:04:26Z

@tusharsadhwani can you try rebasing your PR on the latest main? Maybe it's out of sync.

AlexWaygood · 2024-05-06T09:06:26Z

@tusharsadhwani can you try rebasing your PR on the latest main? Maybe it's out of sync.

I think something might be up with the ecosystem checks generally when it comes to typeshed. I've had several odd results on some of my other PRs that have touched PYI checks, e.g. #11128. I want to try to look into this today.

tusharsadhwani · 2024-05-06T09:09:31Z

Can confirm, merging main doesn't fix the issue.

dhruvmanila · 2024-05-06T09:11:41Z

I think something might be up with the ecosystem checks generally when it comes to typeshed. I've had several odd results on some of my other PRs that have touched PYI checks, e.g. #11128. I want to try to look into this today.

Oh, I see. @AlexWaygood Can you open a new issue to keep track of it? No need to go into detail there but if you're unable to look into it we're still aware of it.

AlexWaygood · 2024-05-06T09:16:01Z

I think something might be up with the ecosystem checks generally when it comes to typeshed. I've had several odd results on some of my other PRs that have touched PYI checks, e.g. #11128. I want to try to look into this today.

Oh, I see. @AlexWaygood Can you open a new issue to keep track of it? No need to go into detail there but if you're unable to look into it we're still aware of it.

Done:

Odd ecosystem results on typeshed #11305

AlexWaygood

Nice!

crates/ruff_linter/src/rules/flake8_pyi/rules/duplicate_literal_member.rs

crates/ruff_linter/src/checkers/ast/analyze/expression.rs

crates/ruff_linter/src/rules/flake8_pyi/rules/duplicate_literal_member.rs

crates/ruff_python_semantic/src/analyze/typing.rs

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI062.py

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

ruff.schema.json

AlexWaygood

LGTM, thanks!

AlexWaygood · 2024-05-07T18:26:11Z

I double-checked again, and I cannot reproduce the ecosystem results locally on my clone of typeshed. I checked out this PR branch locally in my ruff clone, and then ran this command from the directory of my typeshed clone, with the following results

% cargo run --manifest-path ../ruff/Cargo.toml -- check stubs stdlib --isolated --select=PYI062 --preview --no-cache
    Finished dev [unoptimized + debuginfo] target(s) in 0.10s
     Running `/Users/alexw/dev/ruff/target/debug/ruff check stubs stdlib --isolated --select=PYI062 --preview --no-cache`
All checks passed!

I also confirmed that the same command did highlight duplicate literal members if I purposefully introduced some to a random .pyi file in typeshed.

[flake8-pyi] Implement PYI062

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tusharsadhwani requested a review from AlexWaygood as a code owner May 3, 2024 19:27

update schema

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zanieb reviewed May 3, 2024

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move rule to preview group

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zanieb reviewed May 3, 2024

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Add test for nested literals

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tusharsadhwani added 2 commits May 4, 2024 01:44

add a bunch more test cases

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Merge branch 'main' into pyi-062

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AlexWaygood mentioned this pull request May 6, 2024

Odd ecosystem results on typeshed #11305

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tusharsadhwani and others added 2 commits May 7, 2024 21:17

Apply suggestions from code review

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Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

update examples

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tusharsadhwani requested review from MichaReiser and dhruvmanila as code owners May 7, 2024 17:44

tusharsadhwani force-pushed the pyi-062 branch from 98e1a85 to 784eb52 Compare May 7, 2024 17:44

Merge branch 'main' into pyi-062

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AlexWaygood removed request for MichaReiser and dhruvmanila May 7, 2024 17:47

remove visit in binop

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AlexWaygood changed the title ~~[flake8-pyi] Implement PYI062~~ [flake8-pyi] Implement PYI062 (duplicate-literal-member) May 7, 2024

AlexWaygood merged commit 56b4c47 into astral-sh:main May 7, 2024
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tusharsadhwani deleted the pyi-062 branch May 7, 2024 18:30

BrewTestBot mentioned this pull request May 9, 2024

ruff 0.4.4 Homebrew/homebrew-core#171299

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[`flake8-pyi`] Implement `PYI062` (`duplicate-literal-member`) #11269

[`flake8-pyi`] Implement `PYI062` (`duplicate-literal-member`) #11269

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AlexWaygood commented May 7, 2024


		x: Literal[True, False, True, False] # PYI062 twice here

		y: Literal[1, print("hello"), 3, Literal[4, 1]] # PYI062 on the last 1

[flake8-pyi] Implement PYI062 (duplicate-literal-member) #11269

[flake8-pyi] Implement PYI062 (duplicate-literal-member) #11269

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tusharsadhwani commented May 3, 2024 • edited Loading

Summary

Test Plan

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ruff-ecosystem results

Linter (stable)

Linter (preview)

zanieb commented May 3, 2024

tusharsadhwani commented May 3, 2024

dhruvmanila commented May 6, 2024

AlexWaygood commented May 6, 2024 • edited Loading

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AlexWaygood commented May 7, 2024

[`flake8-pyi`] Implement `PYI062` (`duplicate-literal-member`) #11269

[`flake8-pyi`] Implement `PYI062` (`duplicate-literal-member`) #11269

tusharsadhwani commented May 3, 2024 •

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`ruff-ecosystem` results

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