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# SOME DESCRIPTIVE TITLE.

# This file is distributed under the same license as the Python package.

# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.

# Translators:

# tomo, 2019

#, fuzzy

msgid ""

msgstr ""

"Project-Id-Version: Python 3.7\n"

"Report-Msgid-Bugs-To: \n"

"POT-Creation-Date: 2021-01-01 16:02+0000\n"

"PO-Revision-Date: 2019-09-01 03:15+0000\n"

"Last-Translator: tomo, 2019\n"

"Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/"

"ja/)\n"

"Language: ja\n"

"MIME-Version: 1.0\n"

"Content-Type: text/plain; charset=UTF-8\n"

"Content-Transfer-Encoding: 8bit\n"

"Plural-Forms: nplurals=1; plural=0;\n"

#: ../../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 ""

#: ../../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 ""

#: ../../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 "::"

#: ../../library/asyncio-dev.rst:166 ../../library/asyncio-dev.rst:222

msgid "Output in debug mode::"

msgstr "::"

#: ../../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 ""

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