compile: Add option for binary output.

Author: laurensvalk

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- Added the `--bin` option to the `compile` command.
+
 ## [2.2.0] - 2025-10-25
 
 ### Added

pybricksdev/cli/__init__.py

@@ -115,13 +115,21 @@ def add_parser(self, subparsers: argparse._SubParsersAction):
             choices=[5, 6],
             type=int,
         )
+        parser.add_argument(
+            "--bin",
+            action="store_true",
+            help="output unformatted binary data only (useful for pipes)",
+        )
         parser.tool = self
 
     async def run(self, args: argparse.Namespace):
         from pybricksdev.compile import compile_multi_file, print_mpy
 
         with _get_script_path(args.file) as script_path:
             mpy = await compile_multi_file(script_path, args.abi)
+        if args.bin:
+            sys.stdout.buffer.write(mpy)
+            return
         print_mpy(mpy)
 
 

tests/test_cli.py

@@ -503,6 +503,7 @@ async def test_compile_file(self):
             args = argparse.Namespace(
                 file=stack.enter_context(open(temp_path, "r", encoding="utf-8")),
                 abi=6,
+                bin=False,
             )
 
             # Mock the compile function
@@ -537,6 +538,7 @@ async def test_compile_stdin(self):
             args = argparse.Namespace(
                 file=mock_stdin,
                 abi=6,
+                bin=False,
             )
 
             # Mock the compile function and tempfile