Upgrade Python version to 3.10-3.14

.github/workflows/code-check.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13.0"]
+        python-version: ["3.10", "3.11", "3.12", "3.13.0", "3.14"]
       fail-fast: false
 
     steps:

.github/workflows/python-build-test.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
       fail-fast: false
 
     steps:
@@ -48,7 +48,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        # Rust runtime doesn't support 3.14 yet.
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         rust-version: [ "1.80.0", "stable" ]
       fail-fast: false
     steps:

apps/auracast.py

@@ -742,10 +742,9 @@ async def run_receive(
         ]
         packet_stats = [0, 0]
 
-        audio_output = await audio_io.create_audio_output(output)
-        # This try should be replaced with contextlib.aclosing() when python 3.9 is no
-        # longer needed.
-        try:
+        async with contextlib.AsyncExitStack() as stack:
+            audio_output = await audio_io.create_audio_output(output)
+            stack.push_async_callback(audio_output.aclose)
             await audio_output.open(
                 audio_io.PcmFormat(
                     audio_io.PcmFormat.Endianness.LITTLE,
@@ -793,8 +792,6 @@ async def run_receive(
             terminated = asyncio.Event()
             big_sync.on(big_sync.Event.TERMINATION, lambda _: terminated.set())
             await terminated.wait()
-        finally:
-            await audio_output.aclose()
 
 
 async def run_transmit(
@@ -891,11 +888,10 @@ async def run_transmit(
         print('Start Periodic Advertising')
         await advertising_set.start_periodic()
 
-        audio_input = await audio_io.create_audio_input(input, input_format)
-        pcm_format = await audio_input.open()
-        # This try should be replaced with contextlib.aclosing() when python 3.9 is no
-        # longer needed.
-        try:
+        async with contextlib.AsyncExitStack() as stack:
+            audio_input = await audio_io.create_audio_input(input, input_format)
+            pcm_format = await audio_input.open()
+            stack.push_async_callback(audio_input.aclose)
             if pcm_format.channels != 2:
                 print("Only 2 channels PCM configurations are supported")
                 return
@@ -967,8 +963,6 @@ async def run_transmit(
                 await iso_queues[1].write(lc3_frame[mid:])
 
                 frame_count += 1
-        finally:
-            await audio_input.aclose()
 
 
 def run_async(async_command: Coroutine) -> None:

bumble/audio/io.py

@@ -19,13 +19,13 @@ from __future__ import annotations
 
 import abc
 import asyncio
+import concurrent.futures
 import dataclasses
 import enum
 import logging
 import pathlib
 import sys
 import wave
-from concurrent.futures import ThreadPoolExecutor
 from typing import TYPE_CHECKING, AsyncGenerator, BinaryIO
 
 from bumble.colors import color
@@ -176,7 +176,7 @@ class ThreadedAudioOutput(AudioOutput):
     """
 
     def __init__(self) -> None:
-        self._thread_pool = ThreadPoolExecutor(1)
+        self._thread_pool = concurrent.futures.ThreadPoolExecutor(1)
         self._pcm_samples: asyncio.Queue[bytes] = asyncio.Queue()
         self._write_task = asyncio.create_task(self._write_loop())
 
@@ -405,7 +405,7 @@ class ThreadedAudioInput(AudioInput):
     """Base class for AudioInput implementation where reading samples may block."""
 
     def __init__(self) -> None:
-        self._thread_pool = ThreadPoolExecutor(1)
+        self._thread_pool = concurrent.futures.ThreadPoolExecutor(1)
         self._pcm_samples: asyncio.Queue[bytes] = asyncio.Queue()
 
     @abc.abstractmethod

bumble/device.py

@@ -2374,11 +2374,7 @@ class Device(utils.CompositeEventEmitter):
             hci.Address.ANY: []
         }  # Futures, by BD address OR [Futures] for hci.Address.ANY
 
-        # In Python <= 3.9 + Rust Runtime, asyncio.Lock cannot be properly initiated.
-        if sys.version_info >= (3, 10):
-            self._cis_lock = asyncio.Lock()
-        else:
-            self._cis_lock = AsyncExitStack()
+        self._cis_lock = asyncio.Lock()
 
         # Own address type cache
         self.connect_own_address_type = None

bumble/utils.py

@@ -241,11 +241,7 @@ def cancel_on_event(
             return
         msg = f'abort: {event} event occurred.'
         if isinstance(future, asyncio.Task):
-            # python < 3.9 does not support passing a message on `Task.cancel`
-            if sys.version_info < (3, 9, 0):
-                future.cancel()
-            else:
-                future.cancel(msg)
+            future.cancel(msg)
         else:
             future.set_exception(asyncio.CancelledError(msg))
 

docs/mkdocs/src/getting_started.md

@@ -3,7 +3,7 @@ GETTING STARTED WITH BUMBLE
 
 # Prerequisites
 
-You need Python 3.9 or above.
+You need Python 3.10 or above.
 Visit the [Python site](https://www.python.org/) for instructions on how to install Python
 for your platform.
 Throughout the documentation, when shell commands are shown, it is assumed that you can

docs/mkdocs/src/index.md

@@ -31,7 +31,7 @@ Some of the configurations that may be useful:
 
 See the [use cases page](use_cases/index.md) for more use cases.
 
-The project is implemented in Python (Python >= 3.9 is required). A number of APIs for functionality that is inherently I/O bound is implemented in terms of python coroutines with async IO. This means that all of the concurrent tasks run in the same thread, which makes everything much simpler and more predictable.
+The project is implemented in Python (Python >= 3.10 is required). A number of APIs for functionality that is inherently I/O bound is implemented in terms of python coroutines with async IO. This means that all of the concurrent tasks run in the same thread, which makes everything much simpler and more predictable.
 
 ![layers](images/bumble_layers.svg)
 

docs/mkdocs/src/platforms/index.md

@@ -1,7 +1,7 @@
 PLATFORMS
 =========
 
-Most of the code included in the project should run on any platform that supports Python >= 3.9. Not all features are supported on all platforms (for example, USB dongle support is only available on platforms where the python USB library is functional).
+Most of the code included in the project should run on any platform that supports Python >= 3.10. Not all features are supported on all platforms (for example, USB dongle support is only available on platforms where the python USB library is functional).
 
 For platform-specific information, see the following pages:
 

environment.yml

@@ -1,9 +0,0 @@
-name: bumble
-channels:
-  - defaults
-  - conda-forge
-dependencies:
-  - pip=23
-  - python=3.9
-  - pip:
-    - --editable .[development,documentation,test]

pyproject.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 license = "Apache-2.0"
 license-files = ["LICENSE"]
 authors = [{ name = "Google", email = "bumble-dev@google.com" }]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "aiohttp ~= 3.8; platform_system!='Emscripten'",
     "appdirs >= 1.4; platform_system!='Emscripten'",