Linting fixes. · IdentityPython/pyFF@4b4c24d

Lint with Ruff: src/pyff/test/test_store.py#L261

src/pyff/test/test_store.py:261:9: F841 Local variable `entity_id` is assigned to but never used

Lint with Ruff: src/pyff/test/test_store.py#L128

src/pyff/test/test_store.py:128:9: F841 Local variable `entity_id` is assigned to but never used

Lint with Ruff: src/pyff/test/test_rwlock.py#L125

src/pyff/test/test_rwlock.py:125:13: E722 Do not use bare `except`

Lint with Ruff: src/pyff/test/test_repo.py#L144

src/pyff/test/test_repo.py:144:9: F841 Local variable `dn` is assigned to but never used

Lint with Ruff: src/pyff/test/test_pipeline.py#L635

src/pyff/test/test_pipeline.py:635:13: E722 Do not use bare `except`

Lint with Ruff: src/pyff/test/test_pipeline.py#L532

src/pyff/test/test_pipeline.py:532:13: E722 Do not use bare `except`

Lint with Ruff: src/pyff/test/test_pipeline.py#L266

src/pyff/test/test_pipeline.py:266:50: E741 Ambiguous variable name: `l`

Lint with Ruff: src/pyff/test/test_md_api.py#L135

src/pyff/test/test_md_api.py:135:20: E721 Use `is` and `is not` for type comparisons, or `isinstance()` for isinstance checks

Lint with Ruff: src/pyff/test/test_log.py#L53

src/pyff/test/test_log.py:53:13: F841 Local variable `bad_handler` is assigned to but never used

Lint with Ruff: src/pyff/store.py#L635

src/pyff/store.py:635:31: F841 Local variable `searcher` is assigned to but never used

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