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Add a fix for redefinition-while-unused#9419

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charliermarsh merged 2 commits intomainfrom
charlie/F811
Jan 9, 2024
Merged

Add a fix for redefinition-while-unused#9419
charliermarsh merged 2 commits intomainfrom
charlie/F811

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@charliermarsh charliermarsh commented Jan 7, 2024 •
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Summary

This PR enables Ruff to remove redefined imports, as in:

import os
import os

print(os)

Previously, Ruff would flag F811 on the second import os, but couldn't fix it.

For now, this fix is marked as safe, but only available in preview.

Closes #3477.

@charliermarsh charliermarsh added the fixes Related to suggested fixes for violations label Jan 7, 2024
@charliermarsh charliermarsh requested a review from zanieb January 7, 2024 01:59
@charliermarsh charliermarsh mentioned this pull request Jan 7, 2024
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github-actions bot commented Jan 7, 2024 •
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ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

ℹ️ ecosystem check detected linter changes. (+0 -0 violations, +4 -0 fixes in 1 projects; 42 projects unchanged)

aws/aws-sam-cli (+0 -0 violations, +4 -0 fixes) 

ruff check --no-cache --exit-zero --preview

- tests/unit/commands/deploy/test_deploy_context.py:10:47: F811 Redefinition of unused `DeployFailedError` from line 8
+ tests/unit/commands/deploy/test_deploy_context.py:10:47: F811 [*] Redefinition of unused `DeployFailedError` from line 8
- tests/unit/local/docker/test_lambda_image.py:8:27: F811 Redefinition of unused `parameterized` from line 5
+ tests/unit/local/docker/test_lambda_image.py:8:27: F811 [*] Redefinition of unused `parameterized` from line 5

Changes by rule (1 rules affected)

code total + violation - violation + fix - fix
F811 4 0 0 4 0

@zanieb
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zanieb commented Jan 8, 2024

I think it can be safe if we merge #9418?

Probably? Seems safer to start this way.

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charliermarsh commented Jan 8, 2024

@zanieb - I'm not sure how to justify or explain that the fix is unsafe though, now that we removed branching. It should always be safe?

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zanieb commented Jan 8, 2024

@charliermarsh I guess so! I can't think of a case. We could gate the fix with preview for now?

@charliermarsh charliermarsh added the preview Related to preview mode features label Jan 9, 2024
@charliermarsh charliermarsh enabled auto-merge (squash) January 9, 2024 00:23
@charliermarsh charliermarsh merged commit 84ab21f into main Jan 9, 2024
@charliermarsh charliermarsh deleted the charlie/F811 branch January 9, 2024 00:29
@Porkepix Porkepix mentioned this pull request Jan 12, 2024
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@zanieb zanieb zanieb approved these changes

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I want ruff to fix F811 error.

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@charliermarsh @zanieb