GH-139590: Run ruff format on pre-commit for Tools/wasm

.pre-commit-config.yaml

@@ -34,6 +34,10 @@ repos:
         name: Run Ruff (format) on Tools/build/check_warnings.py
         args: [--check, --config=Tools/build/.ruff.toml]
         files: ^Tools/build/check_warnings.py
+      - id: ruff-format
+        name: Run Ruff (format) on Tools/wasm/
+        args: [--check, --config=Tools/wasm/.ruff.toml]
+        files: ^Tools/wasm/
 
   - repo: https://github.com/psf/black-pre-commit-mirror
     rev: 25.9.0

Tools/wasm/.ruff.toml

@@ -0,0 +1,28 @@
+extend = "../../.ruff.toml"  # Inherit the project-wide settings
+
+[format]
+preview = true
+docstring-code-format = true
+
+[lint]
+select = [
+    "C4",      # flake8-comprehensions
+    "E",       # pycodestyle
+    "F",       # pyflakes
+    "I",       # isort
+    "ISC",     # flake8-implicit-str-concat
+    "LOG",     # flake8-logging
+    "PGH",     # pygrep-hooks
+    "PT",      # flake8-pytest-style
+    "PYI",     # flake8-pyi
+    "RUF100",  # Ban unused `# noqa` comments
+    "UP",      # pyupgrade
+    "W",       # pycodestyle
+    "YTT",     # flake8-2020
+]
+ignore = [
+    "E501",    # Line too long
+    "F541",    # f-string without any placeholders
+    "PYI024",  # Use `typing.NamedTuple` instead of `collections.namedtuple`
+    "PYI025",  # Use `from collections.abc import Set as AbstractSet`
+]

Tools/wasm/emscripten/__main__.py

@@ -33,7 +33,9 @@
 PREFIX_DIR = CROSS_BUILD_DIR / HOST_TRIPLE / "prefix"
 
 LOCAL_SETUP = CHECKOUT / "Modules" / "Setup.local"
-LOCAL_SETUP_MARKER = "# Generated by Tools/wasm/emscripten.py\n".encode("utf-8")
+LOCAL_SETUP_MARKER = "# Generated by Tools/wasm/emscripten.py\n".encode(
+    "utf-8"
+)
 
 
 def updated_env(updates={}):
@@ -45,7 +47,9 @@ def updated_env(updates={}):
     # https://reproducible-builds.org/docs/source-date-epoch/
     git_epoch_cmd = ["git", "log", "-1", "--pretty=%ct"]
     try:
-        epoch = subprocess.check_output(git_epoch_cmd, encoding="utf-8").strip()
+        epoch = subprocess.check_output(
+            git_epoch_cmd, encoding="utf-8"
+        ).strip()
         env_defaults["SOURCE_DATE_EPOCH"] = epoch
     except subprocess.CalledProcessError:
         pass  # Might be building from a tarball.
@@ -79,7 +83,11 @@ def wrapper(context):
                 terminal_width = 80
             print("⎯" * terminal_width)
             print("📁", working_dir)
-            if clean_ok and getattr(context, "clean", False) and working_dir.exists():
+            if (
+                clean_ok
+                and getattr(context, "clean", False)
+                and working_dir.exists()
+            ):
                 print("🚮 Deleting directory (--clean)...")
                 shutil.rmtree(working_dir)
 
@@ -128,7 +136,9 @@ def build_python_path():
     if not binary.is_file():
         binary = binary.with_suffix(".exe")
         if not binary.is_file():
-            raise FileNotFoundError("Unable to find `python(.exe)` in " f"{NATIVE_BUILD_DIR}")
+            raise FileNotFoundError(
+                f"Unable to find `python(.exe)` in {NATIVE_BUILD_DIR}"
+            )
 
     return binary
 
@@ -158,7 +168,8 @@ def make_build_python(context, working_dir):
     cmd = [
         binary,
         "-c",
-        "import sys; " "print(f'{sys.version_info.major}.{sys.version_info.minor}')",
+        "import sys; "
+        "print(f'{sys.version_info.major}.{sys.version_info.minor}')",
     ]
     version = subprocess.check_output(cmd, encoding="utf-8").strip()
 
@@ -173,7 +184,9 @@ def check_shasum(file: str, expected_shasum: str):
 
 
 def download_and_unpack(working_dir: Path, url: str, expected_shasum: str):
-    with tempfile.NamedTemporaryFile(suffix=".tar.gz", delete_on_close=False) as tmp_file:
+    with tempfile.NamedTemporaryFile(
+        suffix=".tar.gz", delete_on_close=False
+    ) as tmp_file:
         with urlopen(url) as response:
             shutil.copyfileobj(response, tmp_file)
         tmp_file.close()
@@ -186,7 +199,11 @@ def make_emscripten_libffi(context, working_dir):
     ver = "3.4.6"
     libffi_dir = working_dir / f"libffi-{ver}"
     shutil.rmtree(libffi_dir, ignore_errors=True)
-    download_and_unpack(working_dir, f"https://github.com/libffi/libffi/releases/download/v{ver}/libffi-{ver}.tar.gz", "b0dea9df23c863a7a50e825440f3ebffabd65df1497108e5d437747843895a4e")
+    download_and_unpack(
+        working_dir,
+        f"https://github.com/libffi/libffi/releases/download/v{ver}/libffi-{ver}.tar.gz",
+        "b0dea9df23c863a7a50e825440f3ebffabd65df1497108e5d437747843895a4e",
+    )
     call(
         [EMSCRIPTEN_DIR / "make_libffi.sh"],
         env=updated_env({"PREFIX": PREFIX_DIR}),
@@ -200,7 +217,11 @@ def make_mpdec(context, working_dir):
     ver = "4.0.1"
     mpdec_dir = working_dir / f"mpdecimal-{ver}"
     shutil.rmtree(mpdec_dir, ignore_errors=True)
-    download_and_unpack(working_dir, f"https://www.bytereef.org/software/mpdecimal/releases/mpdecimal-{ver}.tar.gz", "96d33abb4bb0070c7be0fed4246cd38416188325f820468214471938545b1ac8")
+    download_and_unpack(
+        working_dir,
+        f"https://www.bytereef.org/software/mpdecimal/releases/mpdecimal-{ver}.tar.gz",
+        "96d33abb4bb0070c7be0fed4246cd38416188325f820468214471938545b1ac8",
+    )
     call(
         [
             "emconfigure",
@@ -214,10 +235,7 @@ def make_mpdec(context, working_dir):
         quiet=context.quiet,
     )
     call(
-        [
-            "make",
-            "install"
-        ],
+        ["make", "install"],
         cwd=mpdec_dir,
         quiet=context.quiet,
     )
@@ -226,17 +244,15 @@ def make_mpdec(context, working_dir):
 @subdir(HOST_DIR, clean_ok=True)
 def configure_emscripten_python(context, working_dir):
     """Configure the emscripten/host build."""
-    config_site = os.fsdecode(
-        EMSCRIPTEN_DIR / "config.site-wasm32-emscripten"
-    )
+    config_site = os.fsdecode(EMSCRIPTEN_DIR / "config.site-wasm32-emscripten")
 
     emscripten_build_dir = working_dir.relative_to(CHECKOUT)
 
     python_build_dir = NATIVE_BUILD_DIR / "build"
     lib_dirs = list(python_build_dir.glob("lib.*"))
-    assert (
-        len(lib_dirs) == 1
-    ), f"Expected a single lib.* directory in {python_build_dir}"
+    assert len(lib_dirs) == 1, (
+        f"Expected a single lib.* directory in {python_build_dir}"
+    )
     lib_dir = os.fsdecode(lib_dirs[0])
     pydebug = lib_dir.endswith("-pydebug")
     python_version = lib_dir.removesuffix("-pydebug").rpartition("-")[-1]
@@ -290,7 +306,9 @@ def configure_emscripten_python(context, working_dir):
         quiet=context.quiet,
     )
 
-    shutil.copy(EMSCRIPTEN_DIR / "node_entry.mjs", working_dir / "node_entry.mjs")
+    shutil.copy(
+        EMSCRIPTEN_DIR / "node_entry.mjs", working_dir / "node_entry.mjs"
+    )
 
     node_entry = working_dir / "node_entry.mjs"
     exec_script = working_dir / "python.sh"
@@ -383,13 +401,15 @@ def main():
     subcommands = parser.add_subparsers(dest="subcommand")
     build = subcommands.add_parser("build", help="Build everything")
     configure_build = subcommands.add_parser(
-        "configure-build-python", help="Run `configure` for the " "build Python"
+        "configure-build-python", help="Run `configure` for the build Python"
     )
     make_mpdec_cmd = subcommands.add_parser(
-        "make-mpdec", help="Clone mpdec repo, configure and build it for emscripten"
+        "make-mpdec",
+        help="Clone mpdec repo, configure and build it for emscripten",
     )
     make_libffi_cmd = subcommands.add_parser(
-        "make-libffi", help="Clone libffi repo, configure and build it for emscripten"
+        "make-libffi",
+        help="Clone libffi repo, configure and build it for emscripten",
     )
     make_build = subcommands.add_parser(
         "make-build-python", help="Run `make` for the build Python"
@@ -457,7 +477,11 @@ def main():
 
     if not context.subcommand:
         # No command provided, display help and exit
-        print("Expected one of", ", ".join(sorted(dispatch.keys())), file=sys.stderr)
+        print(
+            "Expected one of",
+            ", ".join(sorted(dispatch.keys())),
+            file=sys.stderr,
+        )
         parser.print_help(sys.stderr)
         sys.exit(1)
     dispatch[context.subcommand](context)

Tools/wasm/emscripten/prepare_external_wasm.py

@@ -19,6 +19,7 @@
 }});
 """
 
+
 def prepare_wasm(input_file, output_file, function_name):
     # Read the compiled WASM as binary and convert to hex
     wasm_bytes = Path(input_file).read_bytes()
@@ -31,9 +32,7 @@ def prepare_wasm(input_file, output_file, function_name):
     )
     Path(output_file).write_text(js_content)
 
-    print(
-        f"Successfully compiled {input_file} and generated {output_file}"
-    )
+    print(f"Successfully compiled {input_file} and generated {output_file}")
     return 0
 
 

Tools/wasm/emscripten/wasm_assets.py

@@ -27,7 +27,9 @@
 WASM_STDLIB_ZIP = (
     WASM_LIB / f"python{sys.version_info.major}{sys.version_info.minor}.zip"
 )
-WASM_STDLIB = WASM_LIB / f"python{sys.version_info.major}.{sys.version_info.minor}"
+WASM_STDLIB = (
+    WASM_LIB / f"python{sys.version_info.major}.{sys.version_info.minor}"
+)
 WASM_DYNLOAD = WASM_STDLIB / "lib-dynload"
 
 

Tools/wasm/emscripten/web_example/server.py

@@ -6,10 +6,16 @@
     description="Start a local webserver with a Python terminal."
 )
 parser.add_argument(
-    "--port", type=int, default=8000, help="port for the http server to listen on"
+    "--port",
+    type=int,
+    default=8000,
+    help="port for the http server to listen on",
 )
 parser.add_argument(
-    "--bind", type=str, default="127.0.0.1", help="Bind address (empty for all)"
+    "--bind",
+    type=str,
+    default="127.0.0.1",
+    help="Bind address (empty for all)",
 )
 
 

Tools/wasm/wasi.py

@@ -1,10 +1,12 @@
-if  __name__ == "__main__":
+if __name__ == "__main__":
     import pathlib
     import runpy
     import sys
 
-    print("⚠️ WARNING: This script is deprecated and slated for removal in Python 3.20; "
-          "execute the `wasi/` directory instead (i.e. `python Tools/wasm/wasi`)\n",
-          file=sys.stderr)
+    print(
+        "⚠️ WARNING: This script is deprecated and slated for removal in Python 3.20; "
+        "execute the `wasi/` directory instead (i.e. `python Tools/wasm/wasi`)\n",
+        file=sys.stderr,
+    )
 
     runpy.run_path(pathlib.Path(__file__).parent / "wasi", run_name="__main__")