build: upgrade Python linter ruff, add rules ASYNC,PERF

Author: cclauss

Makefile

@@ -1565,8 +1565,8 @@ cpplint: lint-cpp
 # Try with '--system' if it fails without; the system may have set '--user'
 lint-py-build: ## Build resources needed to lint python files.
 	$(info Pip installing ruff on $(shell $(PYTHON) --version)...)
-	$(PYTHON) -m pip install --upgrade --target tools/pip/site-packages ruff==0.6.5 || \
-		$(PYTHON) -m pip install --upgrade --system --target tools/pip/site-packages ruff==0.6.5
+	$(PYTHON) -m pip install --upgrade --target tools/pip/site-packages ruff==0.13.1 || \
+		$(PYTHON) -m pip install --upgrade --system --target tools/pip/site-packages ruff==0.13.1
 
 .PHONY: lint-py lint-py-fix lint-py-fix-unsafe
 ifneq ("","$(wildcard tools/pip/site-packages/ruff)")
@@ -1576,7 +1576,6 @@ lint-py:
 	tools/pip/site-packages/bin/ruff check .
 lint-py-fix:
 	tools/pip/site-packages/bin/ruff check . --fix
-
 lint-py-fix-unsafe:
 	tools/pip/site-packages/bin/ruff check . --fix --unsafe-fixes
 else

configure.py

@@ -1300,7 +1300,7 @@ def check_compiler(o):
   print_verbose(f"Detected {'Apple ' if is_apple else ''}{'clang ' if is_clang else ''}C++ compiler (CXX={CXX}) version: {version_str}")
   if not ok:
     warn(f'failed to autodetect C++ compiler version (CXX={CXX})')
-  elif (is_apple and clang_version < (17, 0, 0) or not is_apple and clang_version < (19, 1, 0)) if is_clang else gcc_version < (12, 2, 0):
+  elif ((is_apple and clang_version < (17, 0, 0)) or (not is_apple and clang_version < (19, 1, 0))) if is_clang else gcc_version < (12, 2, 0):
     warn(f"C++ compiler (CXX={CXX}, {version_str}) too old, need g++ 12.2.0 or clang++ 19.1.0{' or Apple clang++ 17.0.0' if is_apple else ''}")
 
   ok, is_clang, clang_version, gcc_version, is_apple = try_check_compiler(CC, 'c')

pyproject.toml

@@ -11,11 +11,13 @@ target-version = "py39"
 
 [tool.ruff.lint]
 select = [
+  "ASYNC",  # flake8-async
   "C90",    # McCabe cyclomatic complexity
   "E",      # pycodestyle
   "F",      # Pyflakes
   "ICN",    # flake8-import-conventions
   "INT",    # flake8-gettext
+  "PERF",   # flake8-performance
   "PLC",    # Pylint conventions
   "PLE",    # Pylint errors
   "PLR09",  # Pylint refactoring: max-args, max-branches, max returns, max-statements
@@ -32,6 +34,7 @@ ignore = [
   "E401",
   "E402",
   "E7",
+  "PLC0415",
   "RUF005",
 ]
 

test/testpy/__init__.py

@@ -160,9 +160,7 @@ def SelectTest(name):
     result = []
     for subpath in os.listdir(path):
       if os.path.isdir(os.path.join(path, subpath)):
-        for f in os.listdir(os.path.join(path, subpath)):
-          if SelectTest(f):
-            result.append([subpath, f[:-3]])
+        result.extend([subpath, f[:-3]] for f in os.listdir(os.path.join(path, subpath)) if SelectTest(f))
     return result
 
   def ListTests(self, current_path, path, arch, mode):

test/tools/test_checkimports.py

@@ -28,7 +28,7 @@ class CheckImportsTest(unittest.TestCase):
                           'test', 'fixtures', 'tools', 'checkimports')
 
   def test_unused_and_unsorted(self):
-    with captured_output() as (out, err):
+    with captured_output() as (out, _err):
       self.assertEqual(is_valid(path.join(self.fixturesDir, 'invalid.cc')),
                        False)
       output = out.getvalue()
@@ -42,21 +42,21 @@ def test_unused_and_unsorted(self):
                     output);
 
   def test_unused_complex(self):
-    with captured_output() as (out, err):
+    with captured_output() as (out, _err):
       self.assertEqual(is_valid(path.join(self.fixturesDir, 'maybe.cc')),
                        False)
       output = out.getvalue()
       self.assertIn('does not use "Local"', output);
 
   def test_unused_simple(self):
-    with captured_output() as (out, err):
+    with captured_output() as (out, _err):
       self.assertEqual(is_valid(path.join(self.fixturesDir, 'unused.cc')),
                        False)
       output = out.getvalue()
       self.assertIn('does not use "Context"', output);
 
   def test_unsorted(self):
-    with captured_output() as (out, err):
+    with captured_output() as (out, _err):
       self.assertEqual(is_valid(path.join(self.fixturesDir, 'unsorted.cc')),
                        False)
       output = out.getvalue()
@@ -67,7 +67,7 @@ def test_unsorted(self):
                     output);
 
   def test_valid(self):
-    with captured_output() as (out, err):
+    with captured_output() as (out, _err):
       self.assertEqual(is_valid(path.join(self.fixturesDir, 'valid.cc')),
                        True)
       output = out.getvalue()

tools/generate_config_gypi.py

@@ -95,7 +95,7 @@ def main():
                       default='//node')
   parser.add_argument('--dep-file', help='path to an optional dep file',
                       default=None)
-  args, unknown_args = parser.parse_known_args()
+  args, _unknown_args = parser.parse_known_args()
 
   config = get_gn_config(args.out_dir)
   v8_config = get_v8_config(args.out_dir, args.node_gn_path)

tools/icu/icutrim.py

@@ -339,17 +339,17 @@ def removeList(count=0):
 removeList(1)
 
 # now, fixup res_index, one at a time
-for tree in trees:
+for tree, value in trees.items():
     # skip trees that don't have res_index
-    if "hasIndex" not in trees[tree]:
+    if "hasIndex" not in value:
         continue
     treebunddir = options.tmpdir
-    if(trees[tree]["treeprefix"]):
-        treebunddir = os.path.join(treebunddir, trees[tree]["treeprefix"])
+    if(value["treeprefix"]):
+        treebunddir = os.path.join(treebunddir, value["treeprefix"])
     if not (os.path.isdir(treebunddir)):
         os.mkdir(treebunddir)
     treebundres = os.path.join(treebunddir,RES_INDX)
     treebundtxt = "%s.txt" % (treebundres[0:-4])
     runcmd("iculslocs", "-i %s -N %s -T %s -b %s" % (outfile, dataname, tree, treebundtxt))
     runcmd("genrb","-d %s -s %s res_index.txt" % (treebunddir, treebunddir))
-    runcmd("icupkg","-s %s -a %s%s %s" % (options.tmpdir, trees[tree]["treeprefix"], RES_INDX, outfile))
+    runcmd("icupkg","-s %s -a %s%s %s" % (options.tmpdir, value["treeprefix"], RES_INDX, outfile))

tools/install.py

@@ -73,7 +73,7 @@ def try_copy(options, path, dest):
   return shutil.copy2(source_path, target_path)
 
 def try_remove(options, path, dest):
-  source_path, target_path = mkpaths(options, path, dest)
+  _source_path, target_path = mkpaths(options, path, dest)
   if not options.silent:
     print('removing %s' % target_path)
   try_unlink(target_path)

tools/test.py

@@ -817,7 +817,7 @@ def setResourceLimits():
     else:
       preexec_fn = setMaxVirtualMemory
 
-  (process, exit_code, timed_out) = RunProcess(
+  (_process, exit_code, timed_out) = RunProcess(
     context,
     timeout,
     args = args,
@@ -924,7 +924,7 @@ def GetBuildRequirements(self, path, context):
     return result
 
   def ListTests(self, current_path, path, context, arch, mode):
-    (name, rest) = CarCdr(path)
+    (name, _rest) = CarCdr(path)
     result = [ ]
     for test in self.tests_repos:
       test_name = test.GetName()