style: Further config Ruff

ruff.toml

@@ -39,9 +39,10 @@ target-version = "py310"
 # Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
 # Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
 # McCabe complexity (`C901`) by default.
-select = ["E4", "E7", "E9", "F", "W"]
+select = ["E4", "E7", "E9", "F", "W", "E2"]
 extend-select = ["I"]
-ignore = ["E731"]
+ignore = ["E731", "F841", "E226"]
+preview = true
 
 # Allow fix for all enabled rules (when `--fix`) is provided.
 fixable = ["ALL"]
@@ -79,4 +80,6 @@ docstring-code-line-length = "dynamic"
 
 [lint.per-file-ignores]
 "__init__.py" = ["E402", "F401", "F403", "I001"]
+"_gdd.py" = ["ALL"]
 "test/**" = ["F841"]
+"test_snow2.py" = ["E241"]