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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001 Python Software Foundation
# This file is distributed under the same license as the Python package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
# Translators:
# python-doc bot, 2026
# Inada Naoki <songofacandy@gmail.com>, 2026
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: Python 3.15\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2026-10-25 17:19+0000\n"
"PO-Revision-Date: 2025-09-16 00:00+0000\n"
"Last-Translator: Inada Naoki <songofacandy@gmail.com>, 2026\n"
"Language-Team: Japanese (https://app.transifex.com/python-doc/teams/5390/"
"ja/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: ja\n"
"Plural-Forms: nplurals=1; plural=0;\n"
#: ../../library/asyncio-dev.rst:7
msgid "Developing with asyncio"
msgstr "asyncio での開発"
msgid ""
"Asynchronous programming is different from classic \"sequential\" "
"programming."
msgstr ""
"非同期プログラミングは、従来の「逐次的」なプログラミングとは異なります。"
#: ../../library/asyncio-dev.rst:12
msgid ""
"This page lists common mistakes and traps and explains how to avoid them."
msgstr ""
"このページはよくある間違いや落とし穴を列挙し、それらを回避する方法を説明しま"
"す。"
#: ../../library/asyncio-dev.rst:19
msgid "Debug Mode"
msgstr "デバッグモード"
#: ../../library/asyncio-dev.rst:21
msgid ""
"By default asyncio runs in production mode. In order to ease the "
"development asyncio has a *debug mode*."
msgstr ""
"asyncio はデフォルトで本運用モードで実行されます。いっぽう、開発を容易にする"
"ために asyncio は \"デバッグモード\" を持っています。"
#: ../../library/asyncio-dev.rst:24
msgid "There are several ways to enable asyncio debug mode:"
msgstr "asyncio のデバッグモードを有効化する方法はいくつかあります:"
#: ../../library/asyncio-dev.rst:26
msgid "Setting the :envvar:`PYTHONASYNCIODEBUG` environment variable to ``1``."
msgstr ":envvar:`PYTHONASYNCIODEBUG` 環境変数の値を ``1`` に設定する。"
#: ../../library/asyncio-dev.rst:28
msgid "Using the :ref:`Python Development Mode <devmode>`."
msgstr ":ref:`Python 開発モード <devmode>` を使う。"
#: ../../library/asyncio-dev.rst:30
msgid "Passing ``debug=True`` to :func:`asyncio.run`."
msgstr ":func:`asyncio.run` 実行時に ``debug=True`` を設定する。"
#: ../../library/asyncio-dev.rst:32
msgid "Calling :meth:`loop.set_debug`."
msgstr ":meth:`loop.set_debug` を呼び出す。"
#: ../../library/asyncio-dev.rst:34
msgid "In addition to enabling the debug mode, consider also:"
msgstr "デバッグモードを有効化することに加え、以下も検討してください:"
#: ../../library/asyncio-dev.rst:36
msgid ""
"setting the log level of the :ref:`asyncio logger <asyncio-logger>` "
"to :py:const:`logging.DEBUG`, for example the following snippet of code can "
"be run at startup of the application::"
msgstr ""
":ref:`asyncio ロガー <asyncio-logger>` のログレベル"
"を :py:const:`logging.DEBUG` に設定します。例えばアプリケーションの起動時に以"
"下を実行します::"
msgid "logging.basicConfig(level=logging.DEBUG)"
msgstr "logging.basicConfig(level=logging.DEBUG)"
#: ../../library/asyncio-dev.rst:42
msgid ""
"configuring the :mod:`warnings` module to display :exc:`ResourceWarning` "
"warnings. One way of doing that is by using the :option:`-W` ``default`` "
"command line option."
msgstr ""
":mod:`warnings` モジュールが :exc:`ResourceWarning` 警告を表示するように設定"
"します。やり方のひとつは :option:`-W` ``default`` コマンドラインオプションを"
"使うことです。"
#: ../../library/asyncio-dev.rst:47
msgid "When the debug mode is enabled:"
msgstr "デバッグモードが有効化されたときの動作:"
#: ../../library/asyncio-dev.rst:49
msgid ""
"Many non-threadsafe asyncio APIs (such as :meth:`loop.call_soon` "
"and :meth:`loop.call_at` methods) raise an exception if they are called from "
"a wrong thread."
msgstr ""
"スレッドセーフでない asyncio APIs の多く (:meth:`loop.call_soon` "
"や :meth:`loop.call_at` など) は、誤ったスレッドから呼び出されたときに例外を"
"送出します。"
#: ../../library/asyncio-dev.rst:53
msgid ""
"The execution time of the I/O selector is logged if it takes too long to "
"perform an I/O operation."
msgstr ""
"I/O セレクタが I/O 処理を実行する時間が長すぎる場合、その実行時間が記録されま"
"す。"
msgid ""
"Callbacks taking longer than 100 milliseconds are logged. "
"The :attr:`loop.slow_callback_duration` attribute can be used to set the "
"minimum execution duration in seconds that is considered \"slow\"."
msgstr ""
"実行時間が 100 ミリ秒を超えるコールバックはログに記録されます。\n"
":attr:`loop.slow_callback_duration` 属性で、「遅い」とみなす実行時間の最小値"
"を秒単位で設定できます。"
#: ../../library/asyncio-dev.rst:64
msgid "Concurrency and Multithreading"
msgstr "並行処理とマルチスレッド処理"
#: ../../library/asyncio-dev.rst:66
msgid ""
"An event loop runs in a thread (typically the main thread) and executes all "
"callbacks and Tasks in its thread. While a Task is running in the event "
"loop, no other Tasks can run in the same thread. When a Task executes an "
"``await`` expression, the running Task gets suspended, and the event loop "
"executes the next Task."
msgstr ""
"イベントループはスレッド（典型的にはメインスレッド）内で動作し、すべてのコー"
"ルバックとタスクをそのスレッド内で実行します。ひとつのタスクがイベントループ"
"内で実行される間、他のタスクを同じスレッド内で実行することはできません。タス"
"クが ``await`` 式を実行すると、実行中のタスクはサスペンドされ、イベントループ"
"は次のタスクを実行します。"
#: ../../library/asyncio-dev.rst:72
msgid ""
"To schedule a :term:`callback` from another OS thread, "
"the :meth:`loop.call_soon_threadsafe` method should be used. Example::"
msgstr ""
"別の OS スレッドからのコールバック (:term:`callback`) をスケジュールする場"
"合、 :meth:`loop.call_soon_threadsafe` メソッドを使ってください。例:"
msgid "loop.call_soon_threadsafe(callback, *args)"
msgstr "loop.call_soon_threadsafe(callback, *args)"
msgid ""
"Almost all asyncio objects are not thread safe, which is typically not a "
"problem unless there is code that works with them from outside of a Task or "
"a callback. If there's a need for such code to call a low-level asyncio "
"API, the :meth:`loop.call_soon_threadsafe` method should be used, e.g.::"
msgstr ""
"ほぼ全ての非同期オブジェクトはスレッドセーフではありませんが、タスクやコール"
"バックの外側で非同期オブジェクトを使うコードが存在しない限り、それが問題には"
"なることはほとんどありません。もしそのような目的で低レベルの asyncio API を呼"
"び出すようなコードを書く必要がある場合、 :meth:`loop.call_soon_threadsafe` メ"
"ソッドを使ってください。例:"
msgid "loop.call_soon_threadsafe(fut.cancel)"
msgstr "loop.call_soon_threadsafe(fut.cancel)"
msgid ""
"To schedule a coroutine object from a different OS thread, "
"the :func:`run_coroutine_threadsafe` function should be used. It returns "
"a :class:`concurrent.futures.Future` to access the result::"
msgstr ""
"別の OS スレッドからコルーチンオブジェクトをスケジュールする場合"
"は、 :func:`run_coroutine_threadsafe` メソッドを使ってください。 "
"``run_coroutine_threadsafe()`` は結果にアクセスするため"
"の :class:`concurrent.futures.Future` オブジェクトを返します:"
msgid ""
"async def coro_func():\n"
" return await asyncio.sleep(1, 42)\n"
"\n"
"# Later in another OS thread:\n"
"\n"
"future = asyncio.run_coroutine_threadsafe(coro_func(), loop)\n"
"# Wait for the result:\n"
"result = future.result()"
msgstr ""
"async def coro_func():\n"
" return await asyncio.sleep(1, 42)\n"
"\n"
"# 後で、別の OS スレッド内で実行する:\n"
"\n"
"future = asyncio.run_coroutine_threadsafe(coro_func(), loop)\n"
"# 結果を待つ:\n"
"result = future.result()"
#: ../../library/asyncio-dev.rst:98
msgid "To handle signals the event loop must be run in the main thread."
msgstr ""
"シグナルの処理を行うには、イベントループはメインスレッド内で実行しなければな"
"りません。"
msgid ""
"The :meth:`loop.run_in_executor` method can be used with "
"a :class:`concurrent.futures.ThreadPoolExecutor` "
"or :class:`~concurrent.futures.InterpreterPoolExecutor` to execute blocking "
"code in a different OS thread without blocking the OS thread that the event "
"loop runs in."
msgstr ""
":meth:`loop.run_in_executor` メソッド"
"を :class:`concurrent.futures.ThreadPoolExecutor` また"
"は :class:`~concurrent.futures.InterpreterPoolExecutor` と組み合わせると、イ"
"ベントループの OS スレッドをブロックせずに、別の OS スレッドでブロッキング"
"コードを実行できます。"
#: ../../library/asyncio-dev.rst:107
msgid ""
"There is currently no way to schedule coroutines or callbacks directly from "
"a different process (such as one started with :mod:`multiprocessing`). "
"The :ref:`asyncio-event-loop-methods` section lists APIs that can read from "
"pipes and watch file descriptors without blocking the event loop. In "
"addition, asyncio's :ref:`Subprocess <asyncio-subprocess>` APIs provide a "
"way to start a process and communicate with it from the event loop. Lastly, "
"the aforementioned :meth:`loop.run_in_executor` method can also be used with "
"a :class:`concurrent.futures.ProcessPoolExecutor` to execute code in a "
"different process."
msgstr ""
"現在のところ、 (たとえば :mod:`multiprocessing` で開始したような) 別のプロセ"
"スからコルーチンやコールバックを直接スケジュールすることはできませ"
"ん。 :ref:`asyncio-event-loop-methods` 節では、イベントループをブロックするこ"
"となくパイプからの読み込みやファイルデスクリプタの監視ができる API のリストを"
"掲載しています。さらに、 asyncio の :ref:`サブプロセス <asyncio-subprocess>` "
"API はイベントループからプロセスを開始したりプロセスと通信したりする方法を提"
"供します。 最後に、前述の :meth:`loop.run_in_executor` メソッド"
"は :class:`concurrent.futures.ProcessPoolExecutor` とともに使用することで、別"
"のプロセス内でコードを実行することもできます。"
#: ../../library/asyncio-dev.rst:121
msgid "Running Blocking Code"
msgstr "ブロッキングコードの実行"
msgid ""
"Blocking (CPU-bound) code should not be called directly. For example, if a "
"function performs a CPU-intensive calculation for 1 second, all concurrent "
"asyncio Tasks and IO operations would be delayed by 1 second."
msgstr ""
"ブロッキングコード (CPU バウンドなコード) を直接呼び出すべきではありません。"
"たとえば、 CPU 負荷の高い関数を1秒実行したとすると、並行に処理されている全て"
"の非同期タスクと I/O 処理は1秒遅れる可能性があります。"
msgid ""
"An executor can be used to run a task in a different thread, including in a "
"different interpreter, or even in a different process to avoid blocking the "
"OS thread with the event loop. See the :meth:`loop.run_in_executor` method "
"for more details."
msgstr ""
"Executor を使うと、別のスレッド (別のインタープリタを含む) や別のプロセスで処"
"理を実行し、イベントループの OS スレッドがブロックされるのを避けられます。\n"
"詳細は :meth:`loop.run_in_executor` メソッドを参照してください。"
#: ../../library/asyncio-dev.rst:138
msgid "Logging"
msgstr "ログ記録"
#: ../../library/asyncio-dev.rst:140
msgid ""
"asyncio uses the :mod:`logging` module and all logging is performed via the "
"``\"asyncio\"`` logger."
msgstr ""
"asyncio は :mod:`logging` モジュールを利用し、 全てのログ記録は "
"``\"asyncio\"`` ロガーを通じて行われます。"
#: ../../library/asyncio-dev.rst:143
msgid ""
"The default log level is :py:const:`logging.INFO`, which can be easily "
"adjusted::"
msgstr ""
"デフォルトのログレベルは :py:const:`logging.INFO` ですが、これは簡単に調節で"
"きます:"
msgid "logging.getLogger(\"asyncio\").setLevel(logging.WARNING)"
msgstr "logging.getLogger(\"asyncio\").setLevel(logging.WARNING)"
#: ../../library/asyncio-dev.rst:149
msgid ""
"Network logging can block the event loop. It is recommended to use a "
"separate thread for handling logs or use non-blocking IO. For example, "
"see :ref:`blocking-handlers`."
msgstr ""
"ネットワークログ記録は、イベントループをブロックし得ます。ログ処理のスレッド"
"を分離するか、ノンブロッキング IO を使用することを推奨します。例え"
"ば、 :ref:`blocking-handlers` を見てください。"
#: ../../library/asyncio-dev.rst:157
msgid "Detect never-awaited coroutines"
msgstr "待ち受け処理を伴わないコルーチンの検出"
msgid ""
"When a coroutine function is called, but not awaited (e.g. ``coro()`` "
"instead of ``await coro()``) or the coroutine is not scheduled "
"with :meth:`asyncio.create_task`, asyncio will emit a :exc:`RuntimeWarning`::"
msgstr ""
"コルーチン関数を呼び出しただけで、await も :meth:`asyncio.create_task` による"
"スケジュールも行わなかった場合 (例えば ``await coro()`` の代わりに "
"``coro()`` と書いた場合)、asyncio は :exc:`RuntimeWarning` を出します。 ::"
msgid ""
"import asyncio\n"
"\n"
"async def test():\n"
" print(\"never scheduled\")\n"
"\n"
"async def main():\n"
" test()\n"
"\n"
"asyncio.run(main())"
msgstr ""
"import asyncio\n"
"\n"
"async def test():\n"
" print(\"never scheduled\")\n"
"\n"
"async def main():\n"
" test()\n"
"\n"
"asyncio.run(main())"
#: ../../library/asyncio-dev.rst:174 ../../library/asyncio-dev.rst:219
#: ../../library/asyncio-dev.rst:393 ../../library/asyncio-dev.rst:450
msgid "Output::"
msgstr "出力::"
msgid ""
"test.py:7: RuntimeWarning: coroutine 'test' was never awaited\n"
" test()"
msgstr ""
"test.py:7: RuntimeWarning: coroutine 'test' was never awaited\n"
" test()"
#: ../../library/asyncio-dev.rst:179 ../../library/asyncio-dev.rst:235
msgid "Output in debug mode::"
msgstr "デバッグモードの出力::"
msgid ""
"test.py:7: RuntimeWarning: coroutine 'test' was never awaited\n"
"Coroutine created at (most recent call last)\n"
" File \"../t.py\", line 9, in <module>\n"
" asyncio.run(main(), debug=True)\n"
"\n"
" < .. >\n"
"\n"
" File \"../t.py\", line 7, in main\n"
" test()\n"
" test()"
msgstr ""
"test.py:7: RuntimeWarning: coroutine 'test' was never awaited\n"
"Coroutine created at (most recent call last)\n"
" File \"../t.py\", line 9, in <module>\n"
" asyncio.run(main(), debug=True)\n"
"\n"
" < .. >\n"
"\n"
" File \"../t.py\", line 7, in main\n"
" test()\n"
" test()"
#: ../../library/asyncio-dev.rst:192
msgid ""
"The usual fix is to either await the coroutine or call "
"the :meth:`asyncio.create_task` function::"
msgstr ""
"通常の修正方法はコルーチンを待ち受ける (await) "
"か、 :meth:`asyncio.create_task` 関数を呼び出すことです:"
msgid ""
"async def main():\n"
" await test()"
msgstr ""
"async def main():\n"
" await test()"
#: ../../library/asyncio-dev.rst:200
msgid "Detect never-retrieved exceptions"
msgstr "回収されない例外の検出"
#: ../../library/asyncio-dev.rst:202
msgid ""
"If a :meth:`Future.set_exception` is called but the Future object is never "
"awaited on, the exception would never be propagated to the user code. In "
"this case, asyncio would emit a log message when the Future object is "
"garbage collected."
msgstr ""
"もし :meth:`Future.set_exception` メソッドが呼び出されても、その Future オブ"
"ジェクトを待ち受けていなければ、例外は決してユーザーコードまで伝播しません。"
"この場合 asyncio は、 Future オブジェクトがガベージコレクションの対象となった"
"ときにログメッセージを送出することがあります。"
#: ../../library/asyncio-dev.rst:207
msgid "Example of an unhandled exception::"
msgstr "処理されない例外の例:"
msgid ""
"import asyncio\n"
"\n"
"async def bug():\n"
" raise Exception(\"not consumed\")\n"
"\n"
"async def main():\n"
" asyncio.create_task(bug())\n"
"\n"
"asyncio.run(main())"
msgstr ""
"import asyncio\n"
"\n"
"async def bug():\n"
" raise Exception(\"not consumed\")\n"
"\n"
"async def main():\n"
" asyncio.create_task(bug())\n"
"\n"
"asyncio.run(main())"
msgid ""
"Task exception was never retrieved\n"
"future: <Task finished coro=<bug() done, defined at test.py:3>\n"
" exception=Exception('not consumed')>\n"
"\n"
"Traceback (most recent call last):\n"
" File \"test.py\", line 4, in bug\n"
" raise Exception(\"not consumed\")\n"
"Exception: not consumed"
msgstr ""
"Task exception was never retrieved\n"
"future: <Task finished coro=<bug() done, defined at test.py:3>\n"
" exception=Exception('not consumed')>\n"
"\n"
"Traceback (most recent call last):\n"
" File \"test.py\", line 4, in bug\n"
" raise Exception(\"not consumed\")\n"
"Exception: not consumed"
#: ../../library/asyncio-dev.rst:230
msgid ""
":ref:`Enable the debug mode <asyncio-debug-mode>` to get the traceback where "
"the task was created::"
msgstr ""
"タスクが生成された箇所を特定するには、 :ref:`デバッグモードを有効化して "
"<asyncio-debug-mode>` トレースバックを取得してください:"
msgid "asyncio.run(main(), debug=True)"
msgstr "asyncio.run(main(), debug=True)"
msgid ""
"Task exception was never retrieved\n"
"future: <Task finished coro=<bug() done, defined at test.py:3>\n"
" exception=Exception('not consumed') created at asyncio/tasks.py:321>\n"
"\n"
"source_traceback: Object created at (most recent call last):\n"
" File \"../t.py\", line 9, in <module>\n"
" asyncio.run(main(), debug=True)\n"
"\n"
"< .. >\n"
"\n"
"Traceback (most recent call last):\n"
" File \"../t.py\", line 4, in bug\n"
" raise Exception(\"not consumed\")\n"
"Exception: not consumed"
msgstr ""
"Task exception was never retrieved\n"
"future: <Task finished coro=<bug() done, defined at test.py:3>\n"
" exception=Exception('not consumed') created at asyncio/tasks.py:321>\n"
"\n"
"source_traceback: Object created at (most recent call last):\n"
" File \"../t.py\", line 9, in <module>\n"
" asyncio.run(main(), debug=True)\n"
"\n"
"< .. >\n"
"\n"
"Traceback (most recent call last):\n"
" File \"../t.py\", line 4, in bug\n"
" raise Exception(\"not consumed\")\n"
"Exception: not consumed"
msgid "Asynchronous generators best practices"
msgstr "非同期ジェネレーターを使う際の推奨事項"
msgid ""
"Writing correct and efficient asyncio code requires awareness of certain "
"pitfalls. This section outlines essential best practices that can save you "
"hours of debugging."
msgstr ""
"正しく効率的な asyncio コードを書くには、いくつかの落とし穴を知っておく必要が"
"あります。\n"
"この節では、長時間のデバッグを避けるために役立つ重要な実践方法を説明します。"
msgid "Close asynchronous generators explicitly"
msgstr "非同期ジェネレーターを明示的に閉じる"
msgid ""
"It is recommended to manually close the :term:`asynchronous generator "
"<asynchronous generator iterator>`. If a generator exits early - for "
"example, due to an exception raised in the body of an ``async for`` loop - "
"its asynchronous cleanup code may run in an unexpected context. This can "
"occur after the tasks it depends on have completed, or during the event loop "
"shutdown when the async-generator's garbage collection hook is called."
msgstr ""
":term:`非同期ジェネレーター <asynchronous generator iterator>` は明示的に閉じ"
"ることを推奨します。\n"
"例えば ``async for`` ループの本体で例外が起きるなどして、途中でジェネレーター"
"の使用を終えると、非同期の後始末処理が予期しないコンテキストで実行される可能"
"性があります。\n"
"依存するタスクが完了した後や、イベントループの終了中に非同期ジェネレーターの"
"ガベージコレクション用フックが呼び出されたときに、後始末が行われることがあり"
"ます。"
msgid ""
"To avoid this, explicitly close the generator by calling "
"its :meth:`~agen.aclose` method, or use the :func:`contextlib.aclosing` "
"context manager::"
msgstr ""
"これを避けるには、:meth:`~agen.aclose` メソッドを呼び出して明示的にジェネレー"
"ターを閉じるか、:func:`contextlib.aclosing` コンテキストマネージャーを使って"
"ください。 ::"
msgid ""
"import asyncio\n"
"import contextlib\n"
"\n"
"async def gen():\n"
" yield 1\n"
" yield 2\n"
"\n"
"async def func():\n"
" async with contextlib.aclosing(gen()) as g:\n"
" async for x in g:\n"
" break # Don't iterate until the end\n"
"\n"
"asyncio.run(func())"
msgstr ""
"import asyncio\n"
"import contextlib\n"
"\n"
"async def gen():\n"
" yield 1\n"
" yield 2\n"
"\n"
"async def func():\n"
" async with contextlib.aclosing(gen()) as g:\n"
" async for x in g:\n"
" break # 最後までイテレーションしない\n"
"\n"
"asyncio.run(func())"
msgid ""
"As noted above, the cleanup code for these asynchronous generators is "
"deferred. The following example demonstrates that the finalization of an "
"asynchronous generator can occur in an unexpected order::"
msgstr ""
"前述のとおり、これらの非同期ジェネレーターの後始末処理は後回しにされます。\n"
"次の例は、非同期ジェネレーターの終了処理が予期しない順序で行われる場合を示し"
"ています。 ::"
msgid ""
"import asyncio\n"
"work_done = False\n"
"\n"
"async def cursor():\n"
" try:\n"
" yield 1\n"
" finally:\n"
" assert work_done\n"
"\n"
"async def rows():\n"
" global work_done\n"
" try:\n"
" yield 2\n"
" finally:\n"
" await asyncio.sleep(0.1) # imitate some async work\n"
" work_done = True\n"
"\n"
"\n"
"async def main():\n"
" async for c in cursor():\n"
" async for r in rows():\n"
" break\n"
" break\n"
"\n"
"asyncio.run(main())"
msgstr ""
"import asyncio\n"
"work_done = False\n"
"\n"
"async def cursor():\n"
" try:\n"
" yield 1\n"
" finally:\n"
" assert work_done\n"
"\n"
"async def rows():\n"
" global work_done\n"
" try:\n"
" yield 2\n"
" finally:\n"
" await asyncio.sleep(0.1) # 非同期の処理を模倣する\n"
" work_done = True\n"
"\n"
"\n"
"async def main():\n"
" async for c in cursor():\n"
" async for r in rows():\n"
" break\n"
" break\n"
"\n"
"asyncio.run(main())"
msgid "For this example, we get the following output::"
msgstr "この例の出力は次のようになります。 ::"
msgid ""
"unhandled exception during asyncio.run() shutdown\n"
"task: <Task finished name='Task-3' coro=<<async_generator_athrow without "
"__name__>()> exception=AssertionError()>\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 6, in cursor\n"
" yield 1\n"
"asyncio.exceptions.CancelledError\n"
"\n"
"During handling of the above exception, another exception occurred:\n"
"\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 8, in cursor\n"
" assert work_done\n"
" ^^^^^^^^^\n"
"AssertionError"
msgstr ""
"unhandled exception during asyncio.run() shutdown\n"
"task: <Task finished name='Task-3' coro=<<async_generator_athrow without "
"__name__>()> exception=AssertionError()>\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 6, in cursor\n"
" yield 1\n"
"asyncio.exceptions.CancelledError\n"
"\n"
"During handling of the above exception, another exception occurred:\n"
"\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 8, in cursor\n"
" assert work_done\n"
" ^^^^^^^^^\n"
"AssertionError"
msgid ""
"The ``cursor()`` asynchronous generator was finalized before the ``rows`` "
"generator - an unexpected behavior."
msgstr ""
"``cursor()`` 非同期ジェネレーターの終了処理が ``rows`` ジェネレーターより先に"
"行われています。\n"
"これは意図しない動作です。"
msgid ""
"The example can be fixed by explicitly closing the ``cursor`` and ``rows`` "
"async-generators::"
msgstr ""
"この例は、``cursor`` と ``rows`` の非同期ジェネレーターを明示的に閉じることで"
"修正できます。 ::"
msgid ""
"async def main():\n"
" async with contextlib.aclosing(cursor()) as cursor_gen:\n"
" async for c in cursor_gen:\n"
" async with contextlib.aclosing(rows()) as rows_gen:\n"
" async for r in rows_gen:\n"
" break\n"
" break"
msgstr ""
"async def main():\n"
" async with contextlib.aclosing(cursor()) as cursor_gen:\n"
" async for c in cursor_gen:\n"
" async with contextlib.aclosing(rows()) as rows_gen:\n"
" async for r in rows_gen:\n"
" break\n"
" break"
#: ../../library/asyncio-dev.rst:352
msgid "Create asynchronous generators only when the event loop is running"
msgstr ""
#: ../../library/asyncio-dev.rst:354
msgid ""
"It is recommended to create :term:`asynchronous generators <asynchronous "
"generator iterator>` only after the event loop has been created."
msgstr ""
msgid ""
"To ensure that asynchronous generators close reliably, the event loop uses "
"the :func:`sys.set_asyncgen_hooks` function to register callback functions. "
"These callbacks update the list of running asynchronous generators to keep "
"it in a consistent state."
msgstr ""
"非同期ジェネレーターを確実に閉じるため、イベントループ"
"は :func:`sys.set_asyncgen_hooks` 関数でコールバック関数を登録します。\n"
"これらのコールバックは、実行中の非同期ジェネレーターの一覧を更新し、整合性を"
"保ちます。"
msgid ""
"When the :meth:`loop.shutdown_asyncgens() <asyncio.loop.shutdown_asyncgens>` "
"function is called, the running generators are stopped gracefully and the "
"list is cleared."
msgstr ""
":meth:`loop.shutdown_asyncgens() <asyncio.loop.shutdown_asyncgens>` 関数が呼"
"び出されると、実行中のジェネレーターの終了処理を行い、一覧を空にします。"
msgid ""
"The asynchronous generator invokes the corresponding system hook during its "
"first iteration. At the same time, the generator records that the hook has "
"been called and does not call it again."
msgstr ""
"非同期ジェネレーターは、最初のイテレーションで対応するシステムフックを呼び出"
"します。\n"
"同時に、フックを呼び出したことを記録し、以後は再び呼び出しません。"
#: ../../library/asyncio-dev.rst:371
msgid ""
"Therefore, if iteration begins before the event loop is created, the event "
"loop will not be able to add the generator to its list of active generators "
"because the hooks are set after the generator attempts to call them. "
"Consequently, the event loop will not be able to terminate the generator if "
"necessary."
msgstr ""
#: ../../library/asyncio-dev.rst:377
msgid "Consider the following example::"
msgstr "次に示す例について考えてみてください。::"
msgid ""
"import asyncio\n"
"\n"
"async def agenfn():\n"
" try:\n"
" yield 10\n"
" finally:\n"
" await asyncio.sleep(0)\n"
"\n"
"\n"
"with asyncio.Runner() as runner:\n"
" agen = agenfn()\n"
" print(runner.run(anext(agen)))\n"
" del agen"
msgstr ""
"import asyncio\n"
"\n"
"async def agenfn():\n"
" try:\n"
" yield 10\n"
" finally:\n"
" await asyncio.sleep(0)\n"
"\n"
"\n"
"with asyncio.Runner() as runner:\n"
" agen = agenfn()\n"
" print(runner.run(anext(agen)))\n"
" del agen"
msgid ""
"10\n"
"Exception ignored while closing generator <async_generator object agenfn at "
"0x000002F71CD10D70>:\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 13, in <module>\n"
" del agen\n"
" ^^^^\n"
"RuntimeError: async generator ignored GeneratorExit"
msgstr ""
"10\n"
"Exception ignored while closing generator <async_generator object agenfn at "
"0x000002F71CD10D70>:\n"
"Traceback (most recent call last):\n"
" File \"example.py\", line 13, in <module>\n"
" del agen\n"
" ^^^^\n"
"RuntimeError: async generator ignored GeneratorExit"
msgid "This example can be fixed as follows::"
msgstr "この例は次のように修正できます。 ::"
msgid ""
"import asyncio\n"
"\n"
"async def agenfn():\n"
" try:\n"
" yield 10\n"
" finally:\n"
" await asyncio.sleep(0)\n"
"\n"
"async def main():\n"
" agen = agenfn()\n"
" print(await anext(agen))\n"
" del agen\n"
"\n"
"asyncio.run(main())"
msgstr ""
"import asyncio\n"
"\n"
"async def agenfn():\n"
" try:\n"
" yield 10\n"
" finally:\n"
" await asyncio.sleep(0)\n"
"\n"
"async def main():\n"
" agen = agenfn()\n"
" print(await anext(agen))\n"
" del agen\n"
"\n"
"asyncio.run(main())"
msgid "Avoid concurrent iteration and closure of the same generator"
msgstr "同じジェネレーターのイテレーションとクローズを並行して行わない"
#: ../../library/asyncio-dev.rst:424
msgid ""
"Async generators may be reentered while "
"another :meth:`~agen.__anext__` / :meth:`~agen.athrow` / :meth:`~agen.aclose` "
"call is in progress. This may lead to an inconsistent state of the async "
"generator and can cause errors."
msgstr ""
msgid "Let's consider the following example::"
msgstr "次の例を考えてみてください。 ::"
msgid ""
"import asyncio\n"
"\n"
"async def consumer():\n"
" for idx in range(100):\n"
" await asyncio.sleep(0)\n"
" message = yield idx\n"
" print('received', message)\n"
"\n"
"async def amain():\n"
" agenerator = consumer()\n"
" await agenerator.asend(None)\n"
"\n"
" fa = asyncio.create_task(agenerator.asend('A'))\n"
" fb = asyncio.create_task(agenerator.asend('B'))\n"
" await fa\n"
" await fb\n"
"\n"
"asyncio.run(amain())"
msgstr ""
"import asyncio\n"
"\n"
"async def consumer():\n"
" for idx in range(100):\n"
" await asyncio.sleep(0)\n"
" message = yield idx\n"
" print('received', message)\n"
"\n"
"async def amain():\n"
" agenerator = consumer()\n"
" await agenerator.asend(None)\n"
"\n"
" fa = asyncio.create_task(agenerator.asend('A'))\n"
" fb = asyncio.create_task(agenerator.asend('B'))\n"
" await fa\n"
" await fb\n"
"\n"
"asyncio.run(amain())"
msgid ""
"received A\n"
"Traceback (most recent call last):\n"
" File \"test.py\", line 38, in <module>\n"
" asyncio.run(amain())\n"
" ~~~~~~~~~~~^^^^^^^^^\n"
" File \"Lib/asyncio/runners.py\", line 204, in run\n"
" return runner.run(main)\n"
" ~~~~~~~~~~^^^^^^\n"
" File \"Lib/asyncio/runners.py\", line 127, in run\n"
" return self._loop.run_until_complete(task)\n"
" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^\n"
" File \"Lib/asyncio/base_events.py\", line 719, in run_until_complete\n"
" return future.result()\n"
" ~~~~~~~~~~~~~^^\n"
" File \"test.py\", line 36, in amain\n"
" await fb\n"
"RuntimeError: anext(): asynchronous generator is already running"
msgstr ""
"received A\n"
"Traceback (most recent call last):\n"
" File \"test.py\", line 38, in <module>\n"
" asyncio.run(amain())\n"
" ~~~~~~~~~~~^^^^^^^^^\n"
" File \"Lib/asyncio/runners.py\", line 204, in run\n"
" return runner.run(main)\n"
" ~~~~~~~~~~^^^^^^\n"
" File \"Lib/asyncio/runners.py\", line 127, in run\n"
" return self._loop.run_until_complete(task)\n"
" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^\n"
" File \"Lib/asyncio/base_events.py\", line 719, in run_until_complete\n"
" return future.result()\n"
" ~~~~~~~~~~~~~^^\n"
" File \"test.py\", line 36, in amain\n"
" await fb\n"
"RuntimeError: anext(): asynchronous generator is already running"
msgid ""
"Therefore, it is recommended to avoid using asynchronous generators in "
"parallel tasks or across multiple event loops."
msgstr ""
"そのため、並行して動くタスクや複数のイベントループで非同期ジェネレーターを共"
"有して使うことは避けるよう推奨します。"