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GeezerVison is showing github.com — python-docs-ja/library/devmode.po at 3.12 · python/python-docs-ja Expand file tree/ Copy pathdevmode.poMore file actions 454 lines (396 loc) · 13.2 KB / Copy pathdevmode.poFile metadata and controls454 lines (396 loc) · 13.2 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 # 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: # tomo, 2021 # Yusuke Miyazaki <[email protected]>, 2021 # #, fuzzy msgid "" msgstr "" "Project-Id-Version: Python 3.14\n" "Report-Msgid-Bugs-To: \n" "POT-Creation-Date: 2025-05-23 14:20+0000\n" "PO-Revision-Date: 2021-06-28 01:04+0000\n" "Last-Translator: Yusuke Miyazaki <[email protected]>, 2021\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/devmode.rst:4 msgid "Python Development Mode" msgstr "Python 開発モード" #: ../../library/devmode.rst:8 msgid "" "The Python Development Mode introduces additional runtime checks that are " "too expensive to be enabled by default. It should not be more verbose than " "the default if the code is correct; new warnings are only emitted when an " "issue is detected." msgstr "" #: ../../library/devmode.rst:13 msgid "" "It can be enabled using the :option:`-X dev <-X>` command line option or by " "setting the :envvar:`PYTHONDEVMODE` environment variable to ``1``." msgstr "" #: ../../library/devmode.rst:16 msgid "See also :ref:`Python debug build <debug-build>`." msgstr "" #: ../../library/devmode.rst:19 msgid "Effects of the Python Development Mode" msgstr "Python 開発モードの影響" #: ../../library/devmode.rst:21 msgid "" "Enabling the Python Development Mode is similar to the following command, " "but with additional effects described below::" msgstr "" "Python 開発モードを有効化することは次のコマンドに似ていますが、以下で説明され" "る追加の影響があります::" #: ../../library/devmode.rst:24 msgid "" "PYTHONMALLOC=debug PYTHONASYNCIODEBUG=1 python -W default -X faulthandler" msgstr "" "PYTHONMALLOC=debug PYTHONASYNCIODEBUG=1 python -W default -X faulthandler" #: ../../library/devmode.rst:26 msgid "Effects of the Python Development Mode:" msgstr "Python 開発モードの影響:" #: ../../library/devmode.rst:28 msgid "" "Add ``default`` :ref:`warning filter <describing-warning-filters>`. The " "following warnings are shown:" msgstr "" "``default`` の :ref:`警告フィルタ <describing-warning-filters>` を追加しま" "す。次の警告が表示されます:" #: ../../library/devmode.rst:31 msgid ":exc:`DeprecationWarning`" msgstr ":exc:`DeprecationWarning`" #: ../../library/devmode.rst:32 msgid ":exc:`ImportWarning`" msgstr ":exc:`ImportWarning`" #: ../../library/devmode.rst:33 msgid ":exc:`PendingDeprecationWarning`" msgstr ":exc:`PendingDeprecationWarning`" #: ../../library/devmode.rst:34 msgid ":exc:`ResourceWarning`" msgstr ":exc:`ResourceWarning`" #: ../../library/devmode.rst:36 msgid "" "Normally, the above warnings are filtered by the default :ref:`warning " "filters <describing-warning-filters>`." msgstr "" "通常、上記の警告は デフォルトの :ref:`警告フィルタ <describing-warning-" "filters>` によりフィルタリングされます。" #: ../../library/devmode.rst:39 msgid "" "It behaves as if the :option:`-W default <-W>` command line option is used." msgstr "" #: ../../library/devmode.rst:41 msgid "" "Use the :option:`-W error <-W>` command line option or set the :envvar:" "`PYTHONWARNINGS` environment variable to ``error`` to treat warnings as " "errors." msgstr "" #: ../../library/devmode.rst:45 msgid "Install debug hooks on memory allocators to check for:" msgstr "" #: ../../library/devmode.rst:47 msgid "Buffer underflow" msgstr "" #: ../../library/devmode.rst:48 msgid "Buffer overflow" msgstr "" #: ../../library/devmode.rst:49 msgid "Memory allocator API violation" msgstr "" #: ../../library/devmode.rst:50 msgid "Unsafe usage of the GIL" msgstr "" #: ../../library/devmode.rst:52 msgid "See the :c:func:`PyMem_SetupDebugHooks` C function." msgstr "" #: ../../library/devmode.rst:54 msgid "" "It behaves as if the :envvar:`PYTHONMALLOC` environment variable is set to " "``debug``." msgstr "" #: ../../library/devmode.rst:57 msgid "" "To enable the Python Development Mode without installing debug hooks on " "memory allocators, set the :envvar:`PYTHONMALLOC` environment variable to " "``default``." msgstr "" #: ../../library/devmode.rst:61 msgid "" "Call :func:`faulthandler.enable` at Python startup to install handlers for " "the :const:`~signal.SIGSEGV`, :const:`~signal.SIGFPE`, :const:`~signal." "SIGABRT`, :const:`~signal.SIGBUS` and :const:`~signal.SIGILL` signals to " "dump the Python traceback on a crash." msgstr "" #: ../../library/devmode.rst:66 msgid "" "It behaves as if the :option:`-X faulthandler <-X>` command line option is " "used or if the :envvar:`PYTHONFAULTHANDLER` environment variable is set to " "``1``." msgstr "" #: ../../library/devmode.rst:70 msgid "" "Enable :ref:`asyncio debug mode <asyncio-debug-mode>`. For example, :mod:" "`asyncio` checks for coroutines that were not awaited and logs them." msgstr "" #: ../../library/devmode.rst:73 msgid "" "It behaves as if the :envvar:`PYTHONASYNCIODEBUG` environment variable is " "set to ``1``." msgstr "" #: ../../library/devmode.rst:76 msgid "" "Check the *encoding* and *errors* arguments for string encoding and decoding " "operations. Examples: :func:`open`, :meth:`str.encode` and :meth:`bytes." "decode`." msgstr "" #: ../../library/devmode.rst:80 msgid "" "By default, for best performance, the *errors* argument is only checked at " "the first encoding/decoding error and the *encoding* argument is sometimes " "ignored for empty strings." msgstr "" #: ../../library/devmode.rst:84 msgid "The :class:`io.IOBase` destructor logs ``close()`` exceptions." msgstr "" #: ../../library/devmode.rst:85 msgid "" "Set the :attr:`~sys.flags.dev_mode` attribute of :data:`sys.flags` to " "``True``." msgstr "" #: ../../library/devmode.rst:88 msgid "" "The Python Development Mode does not enable the :mod:`tracemalloc` module by " "default, because the overhead cost (to performance and memory) would be too " "large. Enabling the :mod:`tracemalloc` module provides additional " "information on the origin of some errors. For example, :exc:" "`ResourceWarning` logs the traceback where the resource was allocated, and a " "buffer overflow error logs the traceback where the memory block was " "allocated." msgstr "" #: ../../library/devmode.rst:95 msgid "" "The Python Development Mode does not prevent the :option:`-O` command line " "option from removing :keyword:`assert` statements nor from setting :const:" "`__debug__` to ``False``." msgstr "" #: ../../library/devmode.rst:99 msgid "" "The Python Development Mode can only be enabled at the Python startup. Its " "value can be read from :data:`sys.flags.dev_mode <sys.flags>`." msgstr "" #: ../../library/devmode.rst:102 msgid "The :class:`io.IOBase` destructor now logs ``close()`` exceptions." msgstr "" #: ../../library/devmode.rst:105 msgid "" "The *encoding* and *errors* arguments are now checked for string encoding " "and decoding operations." msgstr "" #: ../../library/devmode.rst:111 msgid "ResourceWarning Example" msgstr "ResourceWarning の例" #: ../../library/devmode.rst:113 msgid "" "Example of a script counting the number of lines of the text file specified " "in the command line::" msgstr "" #: ../../library/devmode.rst:116 msgid "" "import sys\n" "\n" "def main():\n" " fp = open(sys.argv[1])\n" " nlines = len(fp.readlines())\n" " print(nlines)\n" " # The file is closed implicitly\n" "\n" "if __name__ == \"__main__\":\n" " main()" msgstr "" "import sys\n" "\n" "def main():\n" " fp = open(sys.argv[1])\n" " nlines = len(fp.readlines())\n" " print(nlines)\n" " # ファイルは暗黙的に閉じられる\n" "\n" "if __name__ == \"__main__\":\n" " main()" #: ../../library/devmode.rst:127 msgid "" "The script does not close the file explicitly. By default, Python does not " "emit any warning. Example using README.txt, which has 269 lines:" msgstr "" #: ../../library/devmode.rst:130 msgid "" "$ python script.py README.txt\n" "269" msgstr "" "$ python script.py README.txt\n" "269" #: ../../library/devmode.rst:135 msgid "" "Enabling the Python Development Mode displays a :exc:`ResourceWarning` " "warning:" msgstr "" #: ../../library/devmode.rst:137 msgid "" "$ python -X dev script.py README.txt\n" "269\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='README." "rst' mode='r' encoding='UTF-8'>\n" " main()\n" "ResourceWarning: Enable tracemalloc to get the object allocation traceback" msgstr "" "$ python -X dev script.py README.txt\n" "269\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='README." "rst' mode='r' encoding='UTF-8'>\n" " main()\n" "ResourceWarning: Enable tracemalloc to get the object allocation traceback" #: ../../library/devmode.rst:145 msgid "" "In addition, enabling :mod:`tracemalloc` shows the line where the file was " "opened:" msgstr "" #: ../../library/devmode.rst:148 msgid "" "$ python -X dev -X tracemalloc=5 script.py README.rst\n" "269\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='README." "rst' mode='r' encoding='UTF-8'>\n" " main()\n" "Object allocated at (most recent call last):\n" " File \"script.py\", lineno 10\n" " main()\n" " File \"script.py\", lineno 4\n" " fp = open(sys.argv[1])" msgstr "" "$ python -X dev -X tracemalloc=5 script.py README.rst\n" "269\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='README." "rst' mode='r' encoding='UTF-8'>\n" " main()\n" "Object allocated at (most recent call last):\n" " File \"script.py\", lineno 10\n" " main()\n" " File \"script.py\", lineno 4\n" " fp = open(sys.argv[1])" #: ../../library/devmode.rst:160 msgid "" "The fix is to close explicitly the file. Example using a context manager::" msgstr "" #: ../../library/devmode.rst:162 msgid "" "def main():\n" " # Close the file explicitly when exiting the with block\n" " with open(sys.argv[1]) as fp:\n" " nlines = len(fp.readlines())\n" " print(nlines)" msgstr "" "def main():\n" " # ブロックを終了する際に明示的にファイルを閉じる\n" " with open(sys.argv[1]) as fp:\n" " nlines = len(fp.readlines())\n" " print(nlines)" #: ../../library/devmode.rst:168 msgid "" "Not closing a resource explicitly can leave a resource open for way longer " "than expected; it can cause severe issues upon exiting Python. It is bad in " "CPython, but it is even worse in PyPy. Closing resources explicitly makes an " "application more deterministic and more reliable." msgstr "" #: ../../library/devmode.rst:175 msgid "Bad file descriptor error example" msgstr "" #: ../../library/devmode.rst:177 msgid "Script displaying the first line of itself::" msgstr "" #: ../../library/devmode.rst:179 msgid "" "import os\n" "\n" "def main():\n" " fp = open(__file__)\n" " firstline = fp.readline()\n" " print(firstline.rstrip())\n" " os.close(fp.fileno())\n" " # The file is closed implicitly\n" "\n" "main()" msgstr "" "import os\n" "\n" "def main():\n" " fp = open(__file__)\n" " firstline = fp.readline()\n" " print(firstline.rstrip())\n" " os.close(fp.fileno())\n" " # ファイルは暗黙的に閉じられる\n" "\n" "main()" #: ../../library/devmode.rst:190 msgid "By default, Python does not emit any warning:" msgstr "" #: ../../library/devmode.rst:192 msgid "" "$ python script.py\n" "import os" msgstr "" "$ python script.py\n" "import os" #: ../../library/devmode.rst:197 msgid "" "The Python Development Mode shows a :exc:`ResourceWarning` and logs a \"Bad " "file descriptor\" error when finalizing the file object:" msgstr "" #: ../../library/devmode.rst:200 msgid "" "$ python -X dev script.py\n" "import os\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='script." "py' mode='r' encoding='UTF-8'>\n" " main()\n" "ResourceWarning: Enable tracemalloc to get the object allocation traceback\n" "Exception ignored in: <_io.TextIOWrapper name='script.py' mode='r' " "encoding='UTF-8'>\n" "Traceback (most recent call last):\n" " File \"script.py\", line 10, in <module>\n" " main()\n" "OSError: [Errno 9] Bad file descriptor" msgstr "" "$ python -X dev script.py\n" "import os\n" "script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='script." "py' mode='r' encoding='UTF-8'>\n" " main()\n" "ResourceWarning: Enable tracemalloc to get the object allocation traceback\n" "Exception ignored in: <_io.TextIOWrapper name='script.py' mode='r' " "encoding='UTF-8'>\n" "Traceback (most recent call last):\n" " File \"script.py\", line 10, in <module>\n" " main()\n" "OSError: [Errno 9] Bad file descriptor" #: ../../library/devmode.rst:213 msgid "" "``os.close(fp.fileno())`` closes the file descriptor. When the file object " "finalizer tries to close the file descriptor again, it fails with the ``Bad " "file descriptor`` error. A file descriptor must be closed only once. In the " "worst case scenario, closing it twice can lead to a crash (see :issue:" "`18748` for an example)." msgstr "" #: ../../library/devmode.rst:219 msgid "" "The fix is to remove the ``os.close(fp.fileno())`` line, or open the file " "with ``closefd=False``." msgstr "" |
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