GeezerVisonThe World Wide Web, restored to 800 pixels of glory. |
| Home|About|Gaming cabinet|Archives|How it works|Starter sites |
GeezerVison is showing github.com — python-docs-ja/library/concurrent.futures.po at 3.11 · python/python-docs-ja Expand file tree/ Copy pathconcurrent.futures.poMore file actions 1047 lines (926 loc) · 44.1 KB / Copy pathconcurrent.futures.poFile metadata and controls1047 lines (926 loc) · 44.1 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 # 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: # Takanori Suzuki <[email protected]>, 2021 # tomo, 2021 # mollinaca, 2021 # Osamu NAKAMURA, 2022 # 菊池 健志, 2023 # Arihiro TAKASE, 2023 # 石井明久, 2024 # #, fuzzy msgid "" msgstr "" "Project-Id-Version: Python 3.14\n" "Report-Msgid-Bugs-To: \n" "POT-Creation-Date: 2025-05-09 14:19+0000\n" "PO-Revision-Date: 2021-06-28 00:57+0000\n" "Last-Translator: 石井明久, 2024\n" "Language-Team: Japanese (https://app.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/concurrent.futures.rst:2 msgid ":mod:`!concurrent.futures` --- Launching parallel tasks" msgstr ":mod:`!concurrent.futures` --- 並列タスク実行" #: ../../library/concurrent.futures.rst:9 msgid "" "**Source code:** :source:`Lib/concurrent/futures/thread.py`, :source:`Lib/" "concurrent/futures/process.py`, and :source:`Lib/concurrent/futures/" "interpreter.py`" msgstr "" "**ソースコード:** :source:`Lib/concurrent/futures/thread.py`、:source:`Lib/" "concurrent/futures/process.py` および :source:`Lib/concurrent/futures/" "interpreter.py`" #: ../../library/concurrent.futures.rst:15 msgid "" "The :mod:`concurrent.futures` module provides a high-level interface for " "asynchronously executing callables." msgstr "" ":mod:`concurrent.futures` モジュールは、非同期に実行できる呼び出し可能オブ" "ジェクトの高水準のインターフェースを提供します。" #: ../../library/concurrent.futures.rst:18 msgid "" "The asynchronous execution can be performed with threads, using :class:" "`ThreadPoolExecutor` or :class:`InterpreterPoolExecutor`, or separate " "processes, using :class:`ProcessPoolExecutor`. Each implements the same " "interface, which is defined by the abstract :class:`Executor` class." msgstr "" #: ../../includes/wasm-notavail.rst:3 msgid "Availability" msgstr "" #: ../../includes/wasm-notavail.rst:5 msgid "" "This module does not work or is not available on WebAssembly. See :ref:`wasm-" "availability` for more information." msgstr "" "このモジュールは WebAssembly では動作しないか、利用不可です。詳しくは、:ref:" "`wasm-availability` を見てください。" #: ../../library/concurrent.futures.rst:27 msgid "Executor Objects" msgstr "Executor オブジェクト" #: ../../library/concurrent.futures.rst:31 msgid "" "An abstract class that provides methods to execute calls asynchronously. It " "should not be used directly, but through its concrete subclasses." msgstr "" "非同期呼び出しを実行するためのメソッドを提供する抽象クラスです。このクラスを" "直接使ってはならず、具象サブクラスを介して使います。" #: ../../library/concurrent.futures.rst:36 msgid "" "Schedules the callable, *fn*, to be executed as ``fn(*args, **kwargs)`` and " "returns a :class:`Future` object representing the execution of the " "callable. ::" msgstr "" "呼び出し可能オブジェクト *fn* を、 ``fn(*args, **kwargs)`` として実行するよう" "にスケジュールし、呼び出し可能オブジェクトの実行を表現する :class:`Future` オ" "ブジェクトを返します。 ::" #: ../../library/concurrent.futures.rst:40 msgid "" "with ThreadPoolExecutor(max_workers=1) as executor:\n" " future = executor.submit(pow, 323, 1235)\n" " print(future.result())" msgstr "" #: ../../library/concurrent.futures.rst:46 msgid "Similar to :func:`map(fn, *iterables) <map>` except:" msgstr "" #: ../../library/concurrent.futures.rst:48 msgid "" "The *iterables* are collected immediately rather than lazily, unless a " "*buffersize* is specified to limit the number of submitted tasks whose " "results have not yet been yielded. If the buffer is full, iteration over the " "*iterables* pauses until a result is yielded from the buffer." msgstr "" #: ../../library/concurrent.futures.rst:53 msgid "" "*fn* is executed asynchronously and several calls to *fn* may be made " "concurrently." msgstr "" #: ../../library/concurrent.futures.rst:56 msgid "" "The returned iterator raises a :exc:`TimeoutError` if :meth:`~iterator." "__next__` is called and the result isn't available after *timeout* seconds " "from the original call to :meth:`Executor.map`. *timeout* can be an int or a " "float. If *timeout* is not specified or ``None``, there is no limit to the " "wait time." msgstr "" "もし :meth:`~iterator.__next__` が呼ばれその結果が元々の :meth:`Executor." "map` の呼び出しから *timeout* 秒経った後も利用できない場合、返されるイテレー" "タは :exc:`TimeoutError` を送出します。*timeout* は整数または浮動小数点数で" "す。もし *timeout* が指定されないか の場合、待ち時間に制限はありません。" #: ../../library/concurrent.futures.rst:62 msgid "" "If a *fn* call raises an exception, then that exception will be raised when " "its value is retrieved from the iterator." msgstr "" "もし *fn* の呼び出しが例外を送出した場合、その例外はイテレータから値を受け取" "る時に送出されます。" #: ../../library/concurrent.futures.rst:65 msgid "" "When using :class:`ProcessPoolExecutor`, this method chops *iterables* into " "a number of chunks which it submits to the pool as separate tasks. The " "(approximate) size of these chunks can be specified by setting *chunksize* " "to a positive integer. For very long iterables, using a large value for " "*chunksize* can significantly improve performance compared to the default " "size of 1. With :class:`ThreadPoolExecutor` and :class:" "`InterpreterPoolExecutor`, *chunksize* has no effect." msgstr "" #: ../../library/concurrent.futures.rst:74 msgid "Added the *chunksize* parameter." msgstr "*chunksize* 引数が追加されました。" #: ../../library/concurrent.futures.rst:77 msgid "Added the *buffersize* parameter." msgstr "*buffersize* 引数が追加されました。" #: ../../library/concurrent.futures.rst:82 msgid "" "Signal the executor that it should free any resources that it is using when " "the currently pending futures are done executing. Calls to :meth:`Executor." "submit` and :meth:`Executor.map` made after shutdown will raise :exc:" "`RuntimeError`." msgstr "" "executor に対して、現在保留中のフューチャーが実行された後で、使用中のすべての" "資源を解放するように伝えます。シャットダウンにより後に :meth:`Executor." "submit` と :meth:`Executor.map` を呼び出すと :exc:`RuntimeError` が送出されま" "す。" #: ../../library/concurrent.futures.rst:87 msgid "" "If *wait* is ``True`` then this method will not return until all the pending " "futures are done executing and the resources associated with the executor " "have been freed. If *wait* is ``False`` then this method will return " "immediately and the resources associated with the executor will be freed " "when all pending futures are done executing. Regardless of the value of " "*wait*, the entire Python program will not exit until all pending futures " "are done executing." msgstr "" "*wait* が ``True`` の場合、すべての未完了のフューチャの実行が完了して " "Executor に関連付けられたリソースが解放されるまで、このメソッドは返りませ" "ん。 *wait* が ``False`` の場合、このメソッドはすぐに返り、すべての未完了の" "フューチャの実行が完了したときに、 Executor に関連付けられたリソースが解放さ" "れます。 *wait* の値に関係なく、すべての未完了のフューチャの実行が完了するま" "で Python プログラム全体は終了しません。" #: ../../library/concurrent.futures.rst:95 msgid "" "If *cancel_futures* is ``True``, this method will cancel all pending futures " "that the executor has not started running. Any futures that are completed or " "running won't be cancelled, regardless of the value of *cancel_futures*." msgstr "" #: ../../library/concurrent.futures.rst:100 msgid "" "If both *cancel_futures* and *wait* are ``True``, all futures that the " "executor has started running will be completed prior to this method " "returning. The remaining futures are cancelled." msgstr "" #: ../../library/concurrent.futures.rst:104 msgid "" "You can avoid having to call this method explicitly if you use the :keyword:" "`with` statement, which will shutdown the :class:`Executor` (waiting as if :" "meth:`Executor.shutdown` were called with *wait* set to ``True``)::" msgstr "" ":keyword:`with` 文を使用することで、このメソッドを明示的に呼ばないようにでき" "ます。 :keyword:`with` 文は :class:`Executor` をシャットダウンします " "(*wait* を ``True`` にセットして :meth:`Executor.shutdown` が呼ばれたかのよう" "に待ちます)。" #: ../../library/concurrent.futures.rst:109 msgid "" "import shutil\n" "with ThreadPoolExecutor(max_workers=4) as e:\n" " e.submit(shutil.copy, 'src1.txt', 'dest1.txt')\n" " e.submit(shutil.copy, 'src2.txt', 'dest2.txt')\n" " e.submit(shutil.copy, 'src3.txt', 'dest3.txt')\n" " e.submit(shutil.copy, 'src4.txt', 'dest4.txt')" msgstr "" #: ../../library/concurrent.futures.rst:116 msgid "Added *cancel_futures*." msgstr "*cancel_futures* が追加されました。" #: ../../library/concurrent.futures.rst:121 msgid "ThreadPoolExecutor" msgstr "ThreadPoolExecutor" #: ../../library/concurrent.futures.rst:123 msgid "" ":class:`ThreadPoolExecutor` is an :class:`Executor` subclass that uses a " "pool of threads to execute calls asynchronously." msgstr "" ":class:`ThreadPoolExecutor` はスレッドのプールを使用して非同期に呼び出しを行" "う、 :class:`Executor` のサブクラスです。" #: ../../library/concurrent.futures.rst:126 msgid "" "Deadlocks can occur when the callable associated with a :class:`Future` " "waits on the results of another :class:`Future`. For example::" msgstr "" ":class:`Future` に関連づけられた呼び出し可能オブジェクトが、別の :class:" "`Future` の結果を待つ時にデッドロックすることがあります。例::" #: ../../library/concurrent.futures.rst:129 msgid "" "import time\n" "def wait_on_b():\n" " time.sleep(5)\n" " print(b.result()) # b will never complete because it is waiting on a.\n" " return 5\n" "\n" "def wait_on_a():\n" " time.sleep(5)\n" " print(a.result()) # a will never complete because it is waiting on b.\n" " return 6\n" "\n" "\n" "executor = ThreadPoolExecutor(max_workers=2)\n" "a = executor.submit(wait_on_b)\n" "b = executor.submit(wait_on_a)" msgstr "" #: ../../library/concurrent.futures.rst:145 msgid "And::" msgstr "以下でも同様です::" #: ../../library/concurrent.futures.rst:147 msgid "" "def wait_on_future():\n" " f = executor.submit(pow, 5, 2)\n" " # This will never complete because there is only one worker thread and\n" " # it is executing this function.\n" " print(f.result())\n" "\n" "executor = ThreadPoolExecutor(max_workers=1)\n" "executor.submit(wait_on_future)" msgstr "" #: ../../library/concurrent.futures.rst:159 msgid "" "An :class:`Executor` subclass that uses a pool of at most *max_workers* " "threads to execute calls asynchronously." msgstr "" "最大で *max_workers* 個のスレッドを非同期実行に使う :class:`Executor` のサブ" "クラスです。" #: ../../library/concurrent.futures.rst:162 msgid "" "All threads enqueued to ``ThreadPoolExecutor`` will be joined before the " "interpreter can exit. Note that the exit handler which does this is executed " "*before* any exit handlers added using ``atexit``. This means exceptions in " "the main thread must be caught and handled in order to signal threads to " "exit gracefully. For this reason, it is recommended that " "``ThreadPoolExecutor`` not be used for long-running tasks." msgstr "" #: ../../library/concurrent.futures.rst:169 msgid "" "*initializer* is an optional callable that is called at the start of each " "worker thread; *initargs* is a tuple of arguments passed to the " "initializer. Should *initializer* raise an exception, all currently pending " "jobs will raise a :exc:`~concurrent.futures.thread.BrokenThreadPool`, as " "well as any attempt to submit more jobs to the pool." msgstr "" #: ../../library/concurrent.futures.rst:175 msgid "" "If *max_workers* is ``None`` or not given, it will default to the number of " "processors on the machine, multiplied by ``5``, assuming that :class:" "`ThreadPoolExecutor` is often used to overlap I/O instead of CPU work and " "the number of workers should be higher than the number of workers for :class:" "`ProcessPoolExecutor`." msgstr "" "*max_workers* が ``None`` か指定されない場合のデフォルト値はマシンのプロセッ" "サの数に 5 を掛けたものになります。これは、 :class:`ThreadPoolExecutor` は " "CPU の処理ではなく I/O をオーバーラップするのによく使用されるため、 :class:" "`ProcessPoolExecutor` のワーカーの数よりもこのワーカーの数を増やすべきである" "という想定に基づいています。" #: ../../library/concurrent.futures.rst:183 msgid "" "Added the *thread_name_prefix* parameter to allow users to control the :" "class:`threading.Thread` names for worker threads created by the pool for " "easier debugging." msgstr "" "*thread_name_prefix* 引数が追加され、デバッグしやすくなるようにプールから作ら" "れたワーカスレッド :class:`threading.Thread` の名前を管理できるようになりまし" "た。" #: ../../library/concurrent.futures.rst:188 #: ../../library/concurrent.futures.rst:401 msgid "Added the *initializer* and *initargs* arguments." msgstr "*initializer* と *initargs* 引数が追加されました。" #: ../../library/concurrent.futures.rst:191 msgid "" "Default value of *max_workers* is changed to ``min(32, os.cpu_count() + " "4)``. This default value preserves at least 5 workers for I/O bound tasks. " "It utilizes at most 32 CPU cores for CPU bound tasks which release the GIL. " "And it avoids using very large resources implicitly on many-core machines." msgstr "" #: ../../library/concurrent.futures.rst:197 msgid "" "ThreadPoolExecutor now reuses idle worker threads before starting " "*max_workers* worker threads too." msgstr "" #: ../../library/concurrent.futures.rst:200 msgid "" "Default value of *max_workers* is changed to ``min(32, (os." "process_cpu_count() or 1) + 4)``." msgstr "" #: ../../library/concurrent.futures.rst:208 msgid "ThreadPoolExecutor Example" msgstr "ThreadPoolExecutor の例" #: ../../library/concurrent.futures.rst:211 msgid "" "import concurrent.futures\n" "import urllib.request\n" "\n" "URLS = ['http://www.foxnews.com/',\n" " 'http://www.cnn.com/',\n" " 'http://europe.wsj.com/',\n" " 'http://www.bbc.co.uk/',\n" " 'http://nonexistent-subdomain.python.org/']\n" "\n" "# Retrieve a single page and report the URL and contents\n" "def load_url(url, timeout):\n" " with urllib.request.urlopen(url, timeout=timeout) as conn:\n" " return conn.read()\n" "\n" "# We can use a with statement to ensure threads are cleaned up promptly\n" "with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:\n" " # Start the load operations and mark each future with its URL\n" " future_to_url = {executor.submit(load_url, url, 60): url for url in " "URLS}\n" " for future in concurrent.futures.as_completed(future_to_url):\n" " url = future_to_url[future]\n" " try:\n" " data = future.result()\n" " except Exception as exc:\n" " print('%r generated an exception: %s' % (url, exc))\n" " else:\n" " print('%r page is %d bytes' % (url, len(data)))" msgstr "" #: ../../library/concurrent.futures.rst:240 msgid "InterpreterPoolExecutor" msgstr "InterpreterPoolExecutor" #: ../../library/concurrent.futures.rst:242 msgid "" "The :class:`InterpreterPoolExecutor` class uses a pool of interpreters to " "execute calls asynchronously. It is a :class:`ThreadPoolExecutor` subclass, " "which means each worker is running in its own thread. The difference here is " "that each worker has its own interpreter, and runs each task using that " "interpreter." msgstr "" #: ../../library/concurrent.futures.rst:248 msgid "" "The biggest benefit to using interpreters instead of only threads is true " "multi-core parallelism. Each interpreter has its own :term:`Global " "Interpreter Lock <global interpreter lock>`, so code running in one " "interpreter can run on one CPU core, while code in another interpreter runs " "unblocked on a different core." msgstr "" #: ../../library/concurrent.futures.rst:254 msgid "" "The tradeoff is that writing concurrent code for use with multiple " "interpreters can take extra effort. However, this is because it forces you " "to be deliberate about how and when interpreters interact, and to be " "explicit about what data is shared between interpreters. This results in " "several benefits that help balance the extra effort, including true multi-" "core parallelism, For example, code written this way can make it easier to " "reason about concurrency. Another major benefit is that you don't have to " "deal with several of the big pain points of using threads, like race " "conditions." msgstr "" #: ../../library/concurrent.futures.rst:264 msgid "" "Each worker's interpreter is isolated from all the other interpreters. " "\"Isolated\" means each interpreter has its own runtime state and operates " "completely independently. For example, if you redirect :data:`sys.stdout` " "in one interpreter, it will not be automatically redirected any other " "interpreter. If you import a module in one interpreter, it is not " "automatically imported in any other. You would need to import the module " "separately in interpreter where you need it. In fact, each module imported " "in an interpreter is a completely separate object from the same module in a " "different interpreter, including :mod:`sys`, :mod:`builtins`, and even " "``__main__``." msgstr "" #: ../../library/concurrent.futures.rst:276 msgid "" "Isolation means a mutable object, or other data, cannot be used by more than " "one interpreter at the same time. That effectively means interpreters " "cannot actually share such objects or data. Instead, each interpreter must " "have its own copy, and you will have to synchronize any changes between the " "copies manually. Immutable objects and data, like the builtin singletons, " "strings, and tuples of immutable objects, don't have these limitations." msgstr "" #: ../../library/concurrent.futures.rst:284 msgid "" "Communicating and synchronizing between interpreters is most effectively " "done using dedicated tools, like those proposed in :pep:`734`. One less " "efficient alternative is to serialize with :mod:`pickle` and then send the " "bytes over a shared :mod:`socket <socket>` or :func:`pipe <os.pipe>`." msgstr "" #: ../../library/concurrent.futures.rst:292 msgid "" "A :class:`ThreadPoolExecutor` subclass that executes calls asynchronously " "using a pool of at most *max_workers* threads. Each thread runs tasks in " "its own interpreter. The worker interpreters are isolated from each other, " "which means each has its own runtime state and that they can't share any " "mutable objects or other data. Each interpreter has its own :term:`Global " "Interpreter Lock <global interpreter lock>`, which means code run with this " "executor has true multi-core parallelism." msgstr "" #: ../../library/concurrent.futures.rst:300 msgid "" "The optional *initializer* and *initargs* arguments have the same meaning as " "for :class:`!ThreadPoolExecutor`: the initializer is run when each worker is " "created, though in this case it is run in the worker's interpreter. The " "executor serializes the *initializer* and *initargs* using :mod:`pickle` " "when sending them to the worker's interpreter." msgstr "" #: ../../library/concurrent.futures.rst:308 #: ../../library/concurrent.futures.rst:330 msgid "" "Functions defined in the ``__main__`` module cannot be pickled and thus " "cannot be used." msgstr "" #: ../../library/concurrent.futures.rst:312 msgid "" "The executor may replace uncaught exceptions from *initializer* with :class:" "`~concurrent.futures.interpreter.ExecutionFailed`." msgstr "" #: ../../library/concurrent.futures.rst:315 msgid "" "The optional *shared* argument is a :class:`dict` of objects that all " "interpreters in the pool share. The *shared* items are added to each " "interpreter's ``__main__`` module. Not all objects are shareable. Shareable " "objects include the builtin singletons, :class:`str` and :class:`bytes`, " "and :class:`memoryview`. See :pep:`734` for more info." msgstr "" #: ../../library/concurrent.futures.rst:322 msgid "Other caveats from parent :class:`ThreadPoolExecutor` apply here." msgstr "" #: ../../library/concurrent.futures.rst:324 msgid "" ":meth:`~Executor.submit` and :meth:`~Executor.map` work like normal, except " "the worker serializes the callable and arguments using :mod:`pickle` when " "sending them to its interpreter. The worker likewise serializes the return " "value when sending it back." msgstr "" #: ../../library/concurrent.futures.rst:333 msgid "" "When a worker's current task raises an uncaught exception, the worker always " "tries to preserve the exception as-is. If that is successful then it also " "sets the ``__cause__`` to a corresponding :class:`~concurrent.futures." "interpreter.ExecutionFailed` instance, which contains a summary of the " "original exception. In the uncommon case that the worker is not able to " "preserve the original as-is then it directly preserves the corresponding :" "class:`~concurrent.futures.interpreter.ExecutionFailed` instance instead." msgstr "" #: ../../library/concurrent.futures.rst:345 msgid "ProcessPoolExecutor" msgstr "ProcessPoolExecutor" #: ../../library/concurrent.futures.rst:347 msgid "" "The :class:`ProcessPoolExecutor` class is an :class:`Executor` subclass that " "uses a pool of processes to execute calls asynchronously. :class:" "`ProcessPoolExecutor` uses the :mod:`multiprocessing` module, which allows " "it to side-step the :term:`Global Interpreter Lock <global interpreter " "lock>` but also means that only picklable objects can be executed and " "returned." msgstr "" ":class:`ProcessPoolExecutor` はプロセスプールを使って非同期呼び出しを実施す" "る :class:`Executor` のサブクラスです。:class:`ProcessPoolExecutor` は :mod:" "`multiprocessing` モジュールを利用します。このため :term:`Global Interpreter " "Lock <global interpreter lock>` を回避することができますが、pickle 化できるオ" "ブジェクトしか実行したり返したりすることができません。" #: ../../library/concurrent.futures.rst:354 msgid "" "The ``__main__`` module must be importable by worker subprocesses. This " "means that :class:`ProcessPoolExecutor` will not work in the interactive " "interpreter." msgstr "" "``__main__`` モジュールはワーカサブプロセスでインポート可能でなければなりませ" "ん。\n" "すなわち、 :class:`ProcessPoolExecutor` は対話的インタープリタでは動きませ" "ん。" #: ../../library/concurrent.futures.rst:357 msgid "" "Calling :class:`Executor` or :class:`Future` methods from a callable " "submitted to a :class:`ProcessPoolExecutor` will result in deadlock." msgstr "" ":class:`ProcessPoolExecutor` に渡された呼び出し可能オブジェクトから :class:" "`Executor` や :class:`Future` メソッドを呼ぶとデッドロックに陥ります。" #: ../../library/concurrent.futures.rst:362 msgid "" "An :class:`Executor` subclass that executes calls asynchronously using a " "pool of at most *max_workers* processes. If *max_workers* is ``None`` or " "not given, it will default to :func:`os.process_cpu_count`. If *max_workers* " "is less than or equal to ``0``, then a :exc:`ValueError` will be raised. On " "Windows, *max_workers* must be less than or equal to ``61``. If it is not " "then :exc:`ValueError` will be raised. If *max_workers* is ``None``, then " "the default chosen will be at most ``61``, even if more processors are " "available. *mp_context* can be a :mod:`multiprocessing` context or ``None``. " "It will be used to launch the workers. If *mp_context* is ``None`` or not " "given, the default :mod:`multiprocessing` context is used. See :ref:" "`multiprocessing-start-methods`." msgstr "" #: ../../library/concurrent.futures.rst:376 msgid "" "*initializer* is an optional callable that is called at the start of each " "worker process; *initargs* is a tuple of arguments passed to the " "initializer. Should *initializer* raise an exception, all currently pending " "jobs will raise a :exc:`~concurrent.futures.process.BrokenProcessPool`, as " "well as any attempt to submit more jobs to the pool." msgstr "" #: ../../library/concurrent.futures.rst:382 msgid "" "*max_tasks_per_child* is an optional argument that specifies the maximum " "number of tasks a single process can execute before it will exit and be " "replaced with a fresh worker process. By default *max_tasks_per_child* is " "``None`` which means worker processes will live as long as the pool. When a " "max is specified, the \"spawn\" multiprocessing start method will be used by " "default in absence of a *mp_context* parameter. This feature is incompatible " "with the \"fork\" start method." msgstr "" #: ../../library/concurrent.futures.rst:390 msgid "" "When one of the worker processes terminates abruptly, a :exc:`~concurrent." "futures.process.BrokenProcessPool` error is now raised. Previously, " "behaviour was undefined but operations on the executor or its futures would " "often freeze or deadlock." msgstr "" "ワーカプロセスの1つが突然終了した場合、:exc:`~concurrent.futures.process." "BrokenProcessPool` エラーが送出されるようになりました。\n" "以前は挙動は未定義でしたが、 executor や futures がフリーズしたりデッドロッ" "クを起こすことがしばしばでした。" #: ../../library/concurrent.futures.rst:397 msgid "" "The *mp_context* argument was added to allow users to control the " "start_method for worker processes created by the pool." msgstr "" #: ../../library/concurrent.futures.rst:403 msgid "" "The *max_tasks_per_child* argument was added to allow users to control the " "lifetime of workers in the pool." msgstr "" #: ../../library/concurrent.futures.rst:407 msgid "" "On POSIX systems, if your application has multiple threads and the :mod:" "`multiprocessing` context uses the ``\"fork\"`` start method: The :func:`os." "fork` function called internally to spawn workers may raise a :exc:" "`DeprecationWarning`. Pass a *mp_context* configured to use a different " "start method. See the :func:`os.fork` documentation for further explanation." msgstr "" #: ../../library/concurrent.futures.rst:415 msgid "" "*max_workers* uses :func:`os.process_cpu_count` by default, instead of :func:" "`os.cpu_count`." msgstr "" #: ../../library/concurrent.futures.rst:419 msgid "" "The default process start method (see :ref:`multiprocessing-start-methods`) " "changed away from *fork*. If you require the *fork* start method for :class:" "`ProcessPoolExecutor` you must explicitly pass ``mp_context=multiprocessing." "get_context(\"fork\")``." msgstr "" #: ../../library/concurrent.futures.rst:427 msgid "" "Attempt to terminate all living worker processes immediately by calling :" "meth:`Process.terminate <multiprocessing.Process.terminate>` on each of " "them. Internally, it will also call :meth:`Executor.shutdown` to ensure that " "all other resources associated with the executor are freed." msgstr "" #: ../../library/concurrent.futures.rst:432 #: ../../library/concurrent.futures.rst:444 msgid "" "After calling this method the caller should no longer submit tasks to the " "executor." msgstr "" #: ../../library/concurrent.futures.rst:439 msgid "" "Attempt to kill all living worker processes immediately by calling :meth:" "`Process.kill <multiprocessing.Process.kill>` on each of them. Internally, " "it will also call :meth:`Executor.shutdown` to ensure that all other " "resources associated with the executor are freed." msgstr "" #: ../../library/concurrent.futures.rst:452 msgid "ProcessPoolExecutor Example" msgstr "ProcessPoolExecutor の例" #: ../../library/concurrent.futures.rst:455 msgid "" "import concurrent.futures\n" "import math\n" "\n" "PRIMES = [\n" " 112272535095293,\n" " 112582705942171,\n" " 112272535095293,\n" " 115280095190773,\n" " 115797848077099,\n" " 1099726899285419]\n" "\n" "def is_prime(n):\n" " if n < 2:\n" " return False\n" " if n == 2:\n" " return True\n" " if n % 2 == 0:\n" " return False\n" "\n" " sqrt_n = int(math.floor(math.sqrt(n)))\n" " for i in range(3, sqrt_n + 1, 2):\n" " if n % i == 0:\n" " return False\n" " return True\n" "\n" "def main():\n" " with concurrent.futures.ProcessPoolExecutor() as executor:\n" " for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):\n" " print('%d is prime: %s' % (number, prime))\n" "\n" "if __name__ == '__main__':\n" " main()" msgstr "" #: ../../library/concurrent.futures.rst:490 msgid "Future Objects" msgstr "Future オブジェクト" #: ../../library/concurrent.futures.rst:492 msgid "" "The :class:`Future` class encapsulates the asynchronous execution of a " "callable. :class:`Future` instances are created by :meth:`Executor.submit`." msgstr "" ":class:`Future` クラスは呼び出し可能オブジェクトの非同期実行をカプセル化しま" "す。 :class:`Future` のインスタンスは :meth:`Executor.submit` によって生成さ" "れます。" #: ../../library/concurrent.futures.rst:497 msgid "" "Encapsulates the asynchronous execution of a callable. :class:`Future` " "instances are created by :meth:`Executor.submit` and should not be created " "directly except for testing." msgstr "" "呼び出し可能オブジェクトの非同期実行をカプセル化します。 :class:`Future` イン" "スタンスは :meth:`Executor.submit` で生成され、テストを除いて直接生成すべきで" "はありません。" #: ../../library/concurrent.futures.rst:503 msgid "" "Attempt to cancel the call. If the call is currently being executed or " "finished running and cannot be cancelled then the method will return " "``False``, otherwise the call will be cancelled and the method will return " "``True``." msgstr "" #: ../../library/concurrent.futures.rst:510 msgid "Return ``True`` if the call was successfully cancelled." msgstr "呼び出しが正常にキャンセルされた場合 ``True`` を返します。" #: ../../library/concurrent.futures.rst:514 msgid "" "Return ``True`` if the call is currently being executed and cannot be " "cancelled." msgstr "現在呼び出しが実行中でキャンセルできない場合 ``True`` を返します。" #: ../../library/concurrent.futures.rst:519 msgid "" "Return ``True`` if the call was successfully cancelled or finished running." msgstr "呼び出しが正常にキャンセルされたか終了した場合 ``True`` を返します。" #: ../../library/concurrent.futures.rst:524 msgid "" "Return the value returned by the call. If the call hasn't yet completed then " "this method will wait up to *timeout* seconds. If the call hasn't completed " "in *timeout* seconds, then a :exc:`TimeoutError` will be raised. *timeout* " "can be an int or float. If *timeout* is not specified or ``None``, there is " "no limit to the wait time." msgstr "" "呼び出しによって返された値を返します。もし呼び出しがまだ完了していなければ、" "このメソッドは *timeout* 秒の間、待機します。もし呼び出しが *timeout* 秒間の" "間に完了しなければ、 :exc:`TimeoutError` が送出されます。 *timeout* はintか" "floatを指定できます。もし *timeout* が指定されていないか、 ``None`` であれ" "ば、待機時間に制限はありません。" #: ../../library/concurrent.futures.rst:531 #: ../../library/concurrent.futures.rst:545 msgid "" "If the future is cancelled before completing then :exc:`.CancelledError` " "will be raised." msgstr "" "future が完了する前にキャンセルされた場合 :exc:`CancelledError` が送出されま" "す。" #: ../../library/concurrent.futures.rst:534 msgid "" "If the call raised an exception, this method will raise the same exception." msgstr "" #: ../../library/concurrent.futures.rst:538 msgid "" "Return the exception raised by the call. If the call hasn't yet completed " "then this method will wait up to *timeout* seconds. If the call hasn't " "completed in *timeout* seconds, then a :exc:`TimeoutError` will be raised. " "*timeout* can be an int or float. If *timeout* is not specified or " "``None``, there is no limit to the wait time." msgstr "" "呼び出しによって送出された例外を返します。もし呼び出しがまだ完了されていなけ" "れば、このメソッドは *timeout* 秒だけ待機します。もし呼び出しが *timeout* 秒" "の間に完了しなければ、 :exc:`TimeoutError` が送出されます。 *timeout* にはint" "かfloatを指定できます。 *timeout* が指定されていないか、 ``None`` であれば、" "待機時間に制限はありません。" #: ../../library/concurrent.futures.rst:548 msgid "If the call completed without raising, ``None`` is returned." msgstr "呼び出しが例外を送出することなく完了した場合、``None`` を返します。" #: ../../library/concurrent.futures.rst:552 msgid "" "Attaches the callable *fn* to the future. *fn* will be called, with the " "future as its only argument, when the future is cancelled or finishes " "running." msgstr "" "呼び出し可能な *fn* オブジェクトを future にアタッチします。futureがキャンセ" "ルされたか、実行を終了した際に、future をそのただ一つの引数として *fn* が呼び" "出されます。" #: ../../library/concurrent.futures.rst:556 msgid "" "Added callables are called in the order that they were added and are always " "called in a thread belonging to the process that added them. If the " "callable raises an :exc:`Exception` subclass, it will be logged and " "ignored. If the callable raises a :exc:`BaseException` subclass, the " "behavior is undefined." msgstr "" "追加された呼び出し可能オブジェクトは、追加された順番で呼びだされ、追加を行っ" "たプロセスに属するスレッド中で呼び出されます。もし呼び出し可能オブジェクト" "が :exc:`Exception` のサブクラスを送出した場合、それはログに記録され無視され" "ます。呼び出し可能オブジェクトが :exc:`BaseException` のサブクラスを送出した" "場合の動作は未定義です。" #: ../../library/concurrent.futures.rst:562 msgid "" "If the future has already completed or been cancelled, *fn* will be called " "immediately." msgstr "" "もしfutureがすでに完了しているか、キャンセル済みであれば、*fn* は即座に実行さ" "れます。" #: ../../library/concurrent.futures.rst:565 msgid "" "The following :class:`Future` methods are meant for use in unit tests and :" "class:`Executor` implementations." msgstr "" "以下の :class:`Future` メソッドは、ユニットテストでの使用と :class:" "`Executor` を実装することを意図しています。" #: ../../library/concurrent.futures.rst:570 msgid "" "This method should only be called by :class:`Executor` implementations " "before executing the work associated with the :class:`Future` and by unit " "tests." msgstr "" "このメソッドは、:class:`Future` に関連付けられたワークやユニットテストによる" "ワークの実行前に、 :class:`Executor` の実装によってのみ呼び出してください。" #: ../../library/concurrent.futures.rst:574 msgid "" "If the method returns ``False`` then the :class:`Future` was cancelled, i." "e. :meth:`Future.cancel` was called and returned ``True``. Any threads " "waiting on the :class:`Future` completing (i.e. through :func:`as_completed` " "or :func:`wait`) will be woken up." msgstr "" "このメソッドが ``False`` を返す場合、 :class:`Future` はキャンセルされていま" "す。つまり、 :meth:`Future.cancel` が呼び出されて ``True`` が返っています。:" "class:`Future` の完了を (:func:`as_completed` または :func:`wait` により) " "待機するすべてのスレッドが起動します。" #: ../../library/concurrent.futures.rst:579 msgid "" "If the method returns ``True`` then the :class:`Future` was not cancelled " "and has been put in the running state, i.e. calls to :meth:`Future.running` " "will return ``True``." msgstr "" "このメソッドが ``True`` を返す場合、 :class:`Future` はキャンセルされて、実行" "状態に移行されています。つまり、 :meth:`Future.running` を呼び出すと " "``True`` が返ります。" #: ../../library/concurrent.futures.rst:583 msgid "" "This method can only be called once and cannot be called after :meth:`Future." "set_result` or :meth:`Future.set_exception` have been called." msgstr "" "このメソッドは、一度だけ呼び出すことができ、:meth:`Future.set_result` また" "は :meth:`Future.set_exception` がキャンセルされた後には呼び出すことができま" "せん。" #: ../../library/concurrent.futures.rst:589 msgid "" "Sets the result of the work associated with the :class:`Future` to *result*." msgstr ":class:`Future` に関連付けられたワークの結果を *result* に設定します。" #: ../../library/concurrent.futures.rst:592 #: ../../library/concurrent.futures.rst:605 msgid "" "This method should only be used by :class:`Executor` implementations and " "unit tests." msgstr "" "このメソッドは、 :class:`Executor` の実装またはユニットテストによってのみ使用" "してください。" #: ../../library/concurrent.futures.rst:595 #: ../../library/concurrent.futures.rst:608 msgid "" "This method raises :exc:`concurrent.futures.InvalidStateError` if the :class:" "`Future` is already done." msgstr "" #: ../../library/concurrent.futures.rst:602 msgid "" "Sets the result of the work associated with the :class:`Future` to the :" "class:`Exception` *exception*." msgstr "" ":class:`Future` に関連付けられたワークの結果を :class:`Exception` " "*exception* に設定します。" #: ../../library/concurrent.futures.rst:614 msgid "Module Functions" msgstr "モジュール関数" #: ../../library/concurrent.futures.rst:618 msgid "" "Wait for the :class:`Future` instances (possibly created by different :class:" "`Executor` instances) given by *fs* to complete. Duplicate futures given to " "*fs* are removed and will be returned only once. Returns a named 2-tuple of " "sets. The first set, named ``done``, contains the futures that completed " "(finished or cancelled futures) before the wait completed. The second set, " "named ``not_done``, contains the futures that did not complete (pending or " "running futures)." msgstr "" #: ../../library/concurrent.futures.rst:626 msgid "" "*timeout* can be used to control the maximum number of seconds to wait " "before returning. *timeout* can be an int or float. If *timeout* is not " "specified or ``None``, there is no limit to the wait time." msgstr "" "*timeout* で結果を返すまで待機する最大秒数を指定できます。*timeout* は整数か" "浮動小数点数をとります。*timeout* が指定されないか ``None`` の場合、無期限に" "待機します。" #: ../../library/concurrent.futures.rst:630 msgid "" "*return_when* indicates when this function should return. It must be one of " "the following constants:" msgstr "" "*return_when* でこの関数がいつ結果を返すか指定します。指定できる値は以下の 定" "数のどれか一つです:" #: ../../library/concurrent.futures.rst:636 msgid "Constant" msgstr "定数" #: ../../library/concurrent.futures.rst:637 msgid "Description" msgstr "説明" #: ../../library/concurrent.futures.rst:640 msgid "The function will return when any future finishes or is cancelled." msgstr "いずれかのフューチャが終了したかキャンセルされたときに返します。" #: ../../library/concurrent.futures.rst:643 msgid "" "The function will return when any future finishes by raising an exception. " "If no future raises an exception then it is equivalent to :const:" "`ALL_COMPLETED`." msgstr "" #: ../../library/concurrent.futures.rst:648 msgid "The function will return when all futures finish or are cancelled." msgstr "すべてのフューチャが終了したかキャンセルされたときに返します。" #: ../../library/concurrent.futures.rst:652 msgid "" "Returns an iterator over the :class:`Future` instances (possibly created by " "different :class:`Executor` instances) given by *fs* that yields futures as " "they complete (finished or cancelled futures). Any futures given by *fs* " "that are duplicated will be returned once. Any futures that completed " "before :func:`as_completed` is called will be yielded first. The returned " "iterator raises a :exc:`TimeoutError` if :meth:`~iterator.__next__` is " "called and the result isn't available after *timeout* seconds from the " "original call to :func:`as_completed`. *timeout* can be an int or float. If " "*timeout* is not specified or ``None``, there is no limit to the wait time." msgstr "" #: ../../library/concurrent.futures.rst:665 msgid ":pep:`3148` -- futures - execute computations asynchronously" msgstr ":pep:`3148` -- futures - execute computations asynchronously" #: ../../library/concurrent.futures.rst:666 msgid "" "The proposal which described this feature for inclusion in the Python " "standard library." msgstr "この機能を Python 標準ライブラリに含めることを述べた提案です。" #: ../../library/concurrent.futures.rst:671 msgid "Exception classes" msgstr "例外クラス" #: ../../library/concurrent.futures.rst:677 msgid "Raised when a future is cancelled." msgstr "future がキャンセルされたときに送出されます。" #: ../../library/concurrent.futures.rst:681 msgid "" "A deprecated alias of :exc:`TimeoutError`, raised when a future operation " "exceeds the given timeout." |
| You are visitor 01402520 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required. |