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`lazy-import-immediately-resolved` (`TID255`)

crates/ruff_linter/resources/mdtest/flake8-tidy-imports/lazy-import-immediately-resolved.md

0.16.61.3 KB
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lazy-import-immediately-resolved (TID255)

toml
target-version = "py315"

[lint]
preview = true
select = ["TID254", "TID255"]
flake8-tidy-imports.require-lazy = "all"

Required lazy imports

TID255 ignores imports that are required to be lazy to avoid a conflict with TID254, even if the import is resolved immediately.

py
import foo  # snapshot: lazy-import-mismatch

class Bar(foo.Base): ...
snapshot
error[TID254]: Use a `lazy` import instead of an eager import
 --> src/mdtest_snippet.py:1:8
  |
1 | import foo  # snapshot: lazy-import-mismatch
  |        ^^^
help: Convert to a lazy import
  |
  - import foo  # snapshot: lazy-import-mismatch
1 + lazy import foo  # snapshot: lazy-import-mismatch
2 |
  |
note: This is an unsafe fix and may change runtime behavior

Partially required lazy imports

TID255 still reports immediately resolved names outside require-lazy, even when another name in the same import is required to be lazy.

toml
target-version = "py315"

[lint]
preview = true
select = ["TID254", "TID255"]
flake8-tidy-imports.require-lazy = ["foo", "pkg.Base"]
py
lazy import foo as required, bar
lazy from pkg import Base as RequiredBase, OtherBase

required.value
RequiredBase()
bar.value  # error: [lazy-import-immediately-resolved]
OtherBase()  # error: [lazy-import-immediately-resolved]