[Example] [Bugfix] Fix Gemma ignore list (#1531)

## Purpose ##
* Fix invalid regexes, prevent the vision tower from being quantized

## Fixes ##
* #1306

## Changes ##
* Add `model.` to beginning of ignore list
* Because `"re:model\.vision_tower.*"` is a proper way to escape regex,
but an improper way of escaping strings, `W605` triggers. Let's ignore
this linting warning.
* Remove flake8 configuration from toml file
* Note that [flake8 is not configurable from toml
file](https://pypi.org/project/Flake8-pyproject/#:~:text=Flake8%20cannot%20be%20configured%20via,central%20location%20for%20project%20configuration.),
so these files are purely misleading
* I'm not sure why E203 is ignored, so I think it's fine to not have an
explicit reason given for ignoring W605 (a user can use git blame to
find this PR)

## Testing ##
* Ran gemma3 example

---------

Signed-off-by: Kyle Sayers <[email protected]>

Author: kylesayrs

Makefile

@@ -26,14 +26,14 @@ quality:
 	@echo "Running python quality checks";
 	ruff check $(CHECKDIRS);
 	isort --check-only $(CHECKDIRS);
-	flake8 $(CHECKDIRS) --max-line-length 88 --extend-ignore E203;
+	flake8 $(CHECKDIRS) --max-line-length 88 --extend-ignore E203,W605;
 
 # style the code according to accepted standards for the repo
 style:
 	@echo "Running python styling";
 	ruff format $(CHECKDIRS);
 	isort $(CHECKDIRS);
-	flake8 $(CHECKDIRS) --max-line-length 88 --extend-ignore E203;
+	flake8 $(CHECKDIRS) --max-line-length 88 --extend-ignore E203,W605;
 
 # run tests for the repo
 test:

examples/multimodal_vision/gemma3_example.py

@@ -31,7 +31,11 @@ def data_collator(batch):
     GPTQModifier(
         targets="Linear",
         scheme="W4A16",
-        ignore=["re:*.lm_head", "re:vision_tower.*", "re:multi_modal_projector.*"],
+        ignore=[
+            "lm_head",
+            "re:model\.vision_tower.*",
+            "re:model\.multi_modal_projector.*",
+        ],
     ),
 ]
 

pyproject.toml

@@ -16,10 +16,13 @@ files = "src/guidellm"
 [tool.ruff]
 exclude = ["build", "dist", "env", ".venv", "src/llmcompressor/transformers/tracing/"]
 lint.select = ["E", "F", "W"]
+lint.extend-ignore = ["E203", "W605"]
 
+# flake8 configuration is non-functional, only exists for vscode extensions
+# for the true flake8 configuration, see `Makefile`
 [tool.flake8]
 max-line-length = 88
-extend-ignore = 'E203'
+extend-ignore = ["E203", "W605"]
 
 [tool.pytest.ini_options]
 markers = [