[F811] Warn on and delete double import #275
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[ghstack-poisoned]
facebook-github-bot
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This was referenced Mar 8, 2023
[ghstack-poisoned]
amyreese
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Mar 17, 2023
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| expected_replacement=""" | ||
| import a | ||
| """, |
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For these shadowed imports, this autofix is incorrect — it will result in different runtime behavior than what the original code was, because the last import of a name overwrites all previous imports of that name.
If we can't get that right, then we need to skip the autofix, or defer this rule until a future time when we can do it correctly.
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| import a, b | ||
| """, |
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I know in this case, both a imports are referring to the same module, but I don't like the idea that we're removing the second import. We should instead be removing the first one, so that we're giving consistent runtime behavior before/after. For imports with side-effects, order unfortunately matters.
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| import a, b | ||
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| from x import a | ||
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Stack from ghstack (oldest at bottom):
pyflakesdirectory #271