ruff check --preview --select=E303

Author: cclauss

.circleci/config.yml

@@ -425,7 +425,6 @@ jobs:
       - checkout
       - pip-install
       - run: ruff check
-      - run: ruff check --preview --select=E303
   mypy:
     executor: bionic
     steps:

pyproject.toml

@@ -12,12 +12,17 @@ exclude = [
   ".git",
 ]
 
+# TODO (cclauss): When ruff supports rule E303 without --preview, remove
+# 1. lint.select E303
+# 2. lint.explicit-preview-rules = true, and
+# 3. lint.preview = true
 lint.select = [
   "ARG",
   "ASYNC",
   "B",
   "C90",
   "E",
+  "E303",  # E303: too many blank lines -- explicit-preview-rule
   "F",
   "PERF",
   "PL",
@@ -50,10 +55,9 @@ lint.ignore = [
   "PLW2901",
 ]
 
+lint.explicit-preview-rules = true
 lint.per-file-ignores."emrun.py" = [ "PLE0704" ]
-
 lint.mccabe.max-complexity = 48 # Recommended: 10
-
 lint.pylint.allow-magic-value-types = [
   "bytes",
   "float",
@@ -65,6 +69,8 @@ lint.pylint.max-branches = 49 # Recommended: 12
 lint.pylint.max-returns = 16 # Recommended: 6
 lint.pylint.max-statements = 142 # Recommended: 50
 
+lint.preview = true
+
 [tool.coverage.run]
 source = [ "." ]
 omit = [