[pycodestyle] Implement blank-line-at-end-of-file (W391)

[augustelalande]

Summary

Implements the blank line at end of file rule (W391) from pycodestyle. Renamed to TooManyNewlinesAtEndOfFile for clarity.

Test Plan

New fixtures have been added

Part of #2402

[codspeed-hq]

CodSpeed Performance Report

Merging #10243 will not alter performance

_{Comparing augustelalande:too_many_newlines (2d4e2fe) with main (c746912)}

Summary

✅ 30 untouched benchmarks

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

ℹ️ ecosystem check detected linter changes. (+27 -0 violations, +0 -0 fixes in 5 projects; 38 projects unchanged)

commaai/openpilot (+10 -0 violations, +0 -0 fixes)

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

+ common/transformations/camera.py:163:1: W391 [*] Extra newline at end of file
+ selfdrive/car/card.py:142:1: W391 [*] Extra newline at end of file
+ selfdrive/car/subaru/carstate.py:229:1: W391 [*] Extra newline at end of file
+ selfdrive/debug/internal/fuzz_fw_fingerprint.py:51:1: W391 [*] Too many newlines at end of file
+ selfdrive/debug/test_fw_query_on_routes.py:187:1: W391 [*] Extra newline at end of file
+ selfdrive/thermald/fan_controller.py:38:1: W391 [*] Extra newline at end of file
+ system/loggerd/tests/test_loggerd.py:285:1: W391 [*] Extra newline at end of file
+ tools/zookeeper/disable.py:8:1: W391 [*] Extra newline at end of file
+ tools/zookeeper/enable_and_wait.py:31:1: W391 [*] Extra newline at end of file
+ tools/zookeeper/ignition.py:10:1: W391 [*] Extra newline at end of file

docker/docker-py (+1 -0 violations, +0 -0 fixes)

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

+ docker/utils/__init__.py:13:1: W391 [*] Extra newline at end of file

fronzbot/blinkpy (+1 -0 violations, +0 -0 fixes)

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

+ blinksync/forms.py:122:1: W391 [*] Extra newline at end of file

milvus-io/pymilvus (+3 -0 violations, +0 -0 fixes)

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

+ examples/example_bulkwriter.py:418:1: W391 [*] Extra newline at end of file
+ examples/milvus_client/rbac.py:104:1: W391 [*] Extra newline at end of file
+ examples/user.py:93:1: W391 [*] Extra newline at end of file

mlflow/mlflow (+12 -0 violations, +0 -0 fixes)

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

+ docs/source/llms/llm-evaluate/notebooks/question-answering-evaluation.ipynb:cell 28:1:1: W391 [*] Extra newline at end of file
+ docs/source/llms/llm-evaluate/notebooks/rag-evaluation-llama2.ipynb:cell 22:1:1: W391 [*] Extra newline at end of file
+ docs/source/llms/llm-evaluate/notebooks/rag-evaluation.ipynb:cell 19:1:1: W391 [*] Extra newline at end of file
+ docs/source/llms/rag/notebooks/retriever-evaluation-tutorial.ipynb:cell 48:1:1: W391 [*] Extra newline at end of file
+ docs/source/traditional-ml/hyperparameter-tuning-with-child-runs/notebooks/parent-child-runs.ipynb:cell 15:1:1: W391 [*] Extra newline at end of file
+ docs/source/traditional-ml/serving-multiple-models-with-pyfunc/notebooks/MME_Tutorial.ipynb:cell 25:1:1: W391 [*] Extra newline at end of file
+ examples/evaluation/qa-evaluation.ipynb:cell 29:1:1: W391 [*] Extra newline at end of file
+ examples/evaluation/rag-evaluation.ipynb:cell 16:1:1: W391 [*] Extra newline at end of file
+ examples/h2o/random_forest.ipynb:cell 6:1:1: W391 [*] Extra newline at end of file
+ examples/llms/RAG/retriever-evaluation-tutorial.ipynb:cell 48:1:1: W391 [*] Extra newline at end of file
+ examples/rapids/mlflow_project/notebooks/rapids_mlflow.ipynb:cell 14:1:1: W391 [*] Extra newline at end of file
+ examples/sklearn_elasticnet_wine/train.ipynb:cell 6:1:1: W391 [*] Extra newline at end of file

Changes by rule (1 rules affected)

code	total	+ violation	- violation	+ fix	- fix
W391	27	27	0	0	0

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.

[MichaReiser]

Thanks for your contribution.

We should convert this to a token based rule OR avoid using a regex to fix the performance regression.

[charliermarsh]

I removed the Locator. I don't think we need to guard on empty files here -- that's just for the "no trailing newline" check, since empty files would be a false positive.

[Avasam]

One more step towards #9057 🎉