asyncio-dev.po

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# Copyright (C) 2001-2020, Python Software Foundation
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# Translators:
# Arihiro TAKASE, 2017
# Masato HASHIMOTO <cabezon.hashimoto@gmail.com>, 2017
# 
#, fuzzy
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msgstr ""
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"Last-Translator: Masato HASHIMOTO <cabezon.hashimoto@gmail.com>, 2017\n"
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#: ../../library/asyncio-dev.rst:7
msgid "Developing with asyncio"
msgstr ""

#: ../../library/asyncio-dev.rst:9
msgid ""
"Asynchronous programming is different from classic \"sequential\" "
"programming."
msgstr ""

#: ../../library/asyncio-dev.rst:12
msgid ""
"This page lists common mistakes and traps and explains how to avoid them."
msgstr ""

#: ../../library/asyncio-dev.rst:19
msgid "Debug Mode"
msgstr ""

#: ../../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 ""

#: ../../library/asyncio-dev.rst:24
msgid "There are several ways to enable asyncio debug mode:"
msgstr ""

#: ../../library/asyncio-dev.rst:26
msgid ""
"Setting the :envvar:`PYTHONASYNCIODEBUG` environment variable to ``1``."
msgstr ""

#: ../../library/asyncio-dev.rst:28
msgid "Using the :option:`-X` ``dev`` Python command line option."
msgstr ""

#: ../../library/asyncio-dev.rst:30
msgid "Passing ``debug=True`` to :func:`asyncio.run`."
msgstr ""

#: ../../library/asyncio-dev.rst:32
msgid "Calling :meth:`loop.set_debug`."
msgstr ""

#: ../../library/asyncio-dev.rst:34
msgid "In addition to enabling the debug mode, consider also:"
msgstr ""

#: ../../library/asyncio-dev.rst:36
msgid ""
"setting the log level of the :ref:`asyncio logger <asyncio-logger>` to "
":py:data:`logging.DEBUG`, for example the following snippet of code can be "
"run at startup of the application::"
msgstr ""

#: ../../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 ""

#: ../../library/asyncio-dev.rst:47
msgid "When the debug mode is enabled:"
msgstr ""

#: ../../library/asyncio-dev.rst:49
msgid ""
"asyncio checks for :ref:`coroutines that were not awaited <asyncio-"
"coroutine-not-scheduled>` and logs them; this mitigates the \"forgotten "
"await\" pitfall."
msgstr ""

#: ../../library/asyncio-dev.rst:53
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 ""

#: ../../library/asyncio-dev.rst:57
msgid ""
"The execution time of the I/O selector is logged if it takes too long to "
"perform an I/O operation."
msgstr ""

#: ../../library/asyncio-dev.rst:60
msgid ""
"Callbacks taking longer than 100ms 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 ""

#: ../../library/asyncio-dev.rst:68
msgid "Concurrency and Multithreading"
msgstr ""

#: ../../library/asyncio-dev.rst:70
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 ""

#: ../../library/asyncio-dev.rst:76
msgid ""
"To schedule a callback from a different OS thread, the "
":meth:`loop.call_soon_threadsafe` method should be used. Example::"
msgstr ""

#: ../../library/asyncio-dev.rst:81
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 ""

#: ../../library/asyncio-dev.rst:89
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 ""

#: ../../library/asyncio-dev.rst:102
msgid ""
"To handle signals and to execute subprocesses, the event loop must be run in"
" the main thread."
msgstr "シグナルの処理やサブプロセスの実行を行うには、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。"

#: ../../library/asyncio-dev.rst:105
msgid ""
"The :meth:`loop.run_in_executor` method can be used with a "
":class:`concurrent.futures.ThreadPoolExecutor` to execute blocking code in a"
" different OS thread without blocking the OS thread that the event loop runs"
" in."
msgstr ""

#: ../../library/asyncio-dev.rst:114
msgid "Running Blocking Code"
msgstr ""

#: ../../library/asyncio-dev.rst:116
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 ""

#: ../../library/asyncio-dev.rst:121
msgid ""
"An executor can be used to run a task in a different thread 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 ""

#: ../../library/asyncio-dev.rst:130
msgid "Logging"
msgstr "ログ記録"

#: ../../library/asyncio-dev.rst:132
msgid ""
"asyncio uses the :mod:`logging` module and all logging is performed via the "
"``\"asyncio\"`` logger."
msgstr ""

#: ../../library/asyncio-dev.rst:135
msgid ""
"The default log level is :py:data:`logging.INFO`, which can be easily "
"adjusted::"
msgstr ""

#: ../../library/asyncio-dev.rst:144
msgid "Detect never-awaited coroutines"
msgstr ""

#: ../../library/asyncio-dev.rst:146
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 ""

#: ../../library/asyncio-dev.rst:161 ../../library/asyncio-dev.rst:206
msgid "Output::"
msgstr "出力::"

#: ../../library/asyncio-dev.rst:166 ../../library/asyncio-dev.rst:222
msgid "Output in debug mode::"
msgstr "デバッグモードの出力::"

#: ../../library/asyncio-dev.rst:179
msgid ""
"The usual fix is to either await the coroutine or call the "
":meth:`asyncio.create_task` function::"
msgstr ""

#: ../../library/asyncio-dev.rst:187
msgid "Detect never-retrieved exceptions"
msgstr ""

#: ../../library/asyncio-dev.rst:189
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 ""

#: ../../library/asyncio-dev.rst:194
msgid "Example of an unhandled exception::"
msgstr ""

#: ../../library/asyncio-dev.rst:217
msgid ""
":ref:`Enable the debug mode <asyncio-debug-mode>` to get the traceback where"
" the task was created::"
msgstr ""