Enable some more ruff checks. NFC (#23477)

Author: sbc100

emsymbolizer.py

@@ -131,8 +131,8 @@ def decodeVLQ(string):
       for c in string:
         try:
           integer = vlq_map[c]
-        except ValueError:
-          raise Error(f'Invalid character ({c}) in VLQ')
+        except ValueError as e:
+          raise Error(f'Invalid character ({c}) in VLQ') from e
         value += (integer & 31) << shift
         if integer & 32:
           shift += 5

pyproject.toml

@@ -27,12 +27,9 @@ lint.select = [
 ]
 
 lint.ignore = [
-  "B006",
-  "B011",
-  "B018",
+  "B011", # See https://github.com/PyCQA/flake8-bugbear/issues/66
   "B023",
   "B026",
-  "B904",
   "E402",
   "E501",
   "E721",

test/test_core.py

@@ -8381,7 +8381,7 @@ def test_maybe_wasm2js(self):
     cmd = [PYTHON, path_from_root('tools/maybe_wasm2js.py'), 'test_hello_world.js', 'test_hello_world.wasm']
     if self.is_optimizing():
       cmd += ['-O2']
-    self.run_process(cmd, stdout=open('do_wasm2js.js', 'w')).stdout
+    self.run_process(cmd, stdout=open('do_wasm2js.js', 'w'))
     # remove the wasm to make sure we never use it again
     os.remove('test_hello_world.wasm')
     # verify that it runs

test/test_other.py

@@ -10467,7 +10467,7 @@ def test_split_dwarf_dwp(self):
     # Check that dwp runs, and results in usable output as well
     self.run_process([LLVM_DWP, '-e', 'a.out.wasm', '-o', 'a.out.wasm.dwp'])
     self.assertExists('a.out.wasm.dwp')
-    self.run_process([LLVM_DWARFDUMP, 'a.out.wasm.dwp'], stdout=PIPE).stdout
+    self.run_process([LLVM_DWARFDUMP, 'a.out.wasm.dwp'], stdout=PIPE)
     self.assertIn('.debug_info.dwo contents:', dwdump)
     self.assertIn('DW_AT_GNU_dwo_name\t("hello_world.dwo")', dwdump)
     self.assertIn('DW_AT_name\t("main")', dwdump)

tools/shared.py

@@ -252,7 +252,7 @@ def exec_process(cmd):
     os.execvp(cmd[0], cmd)
 
 
-def run_js_tool(filename, jsargs=[], node_args=[], **kw):  # noqa: mutable default args
+def run_js_tool(filename, jsargs=[], node_args=[], **kw):  # noqa: B006
   """Execute a javascript tool.
 
   This is used by emcc to run parts of the build process that are written