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GeezerVison is showing github.com — python-docs-ja/tutorial/introduction.po at 3.15 · python/python-docs-ja Expand file tree/ Copy pathintroduction.poMore file actions 1246 lines (1126 loc) · 46.1 KB / Copy pathintroduction.poFile metadata and controls1246 lines (1126 loc) · 46.1 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: # python-doc bot, 2025 # Takanori Suzuki <[email protected]>, 2025 # Inada Naoki <[email protected]>, 2026 # #, fuzzy msgid "" msgstr "" "Project-Id-Version: Python 3.15\n" "Report-Msgid-Bugs-To: \n" "POT-Creation-Date: 2026-10-23 18:01+0000\n" "PO-Revision-Date: 2025-09-16 00:02+0000\n" "Last-Translator: Inada Naoki <[email protected]>, 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" #: ../../tutorial/introduction.rst:5 msgid "An Informal Introduction to Python" msgstr "形式ばらない Python の紹介" msgid "" "In the following examples, input and output are distinguished by the " "presence or absence of prompts (:term:`>>>` and :term:`...`): to repeat the " "example, you must type everything after the prompt, when the prompt appears; " "lines that do not begin with a prompt are output from the interpreter. Note " "that a secondary prompt on a line by itself in an example means you must " "type a blank line; this is used to end a multi-line command." msgstr "" "以下の例ではプロンプト (:term:`>>>` と :term:`...`) の有無で入力と出力を区別" "します。例を試すには、プロンプトが表示されているときに例のプロンプトより後ろ" "の内容をすべて入力してください。プロンプトで始まらない行はインタープリタの出" "力です。例の中で二次プロンプトだけがある行は、空行を入力することを意味しま" "す。この空行で複数行にわたるコマンドの入力を終えます。" msgid "" "You can use the \"Copy\" button (it appears in the upper-right corner when " "hovering over or tapping a code example), which strips prompts and omits " "output, to copy and paste the input lines into your interpreter." msgstr "" "コード例にマウスポインタを重ねるかタップすると、右上に「Copy」ボタンが表示さ" "れます。このボタンを使うとプロンプトと出力を除いた入力行だけをコピーし、イン" "タープリタに貼り付けられます。" msgid "" "Many of the examples in this manual, even those entered at the interactive " "prompt, include comments. Comments in Python start with the hash character, " "``#``, and extend to the end of the physical line. A comment may appear at " "the start of a line or following whitespace or code, but not within a string " "literal. A hash character within a string literal is just a hash character. " "Since comments are to clarify code and are not interpreted by Python, they " "may be omitted when typing in examples." msgstr "" "対話プロンプトで入力する例も含め、このマニュアルの多くの例にはコメントが付い" "ています。Python のコメントはハッシュ文字 ``#`` で始まり、物理行の末尾まで続" "きます。コメントは行の先頭や空白・コードの後に書けますが、文字列リテラルの中" "には書けません。文字列リテラル内のハッシュ文字は単なるハッシュ文字です。コメ" "ントはコードをわかりやすくするためのもので、Python は解釈しません。そのため、" "例を入力するときには省略できます。" #: ../../tutorial/introduction.rst:30 msgid "Some examples::" msgstr "いくつかの例です::" #: ../../tutorial/introduction.rst:32 msgid "" "# this is the first comment\n" "spam = 1 # and this is the second comment\n" " # ... and now a third!\n" "text = \"# This is not a comment because it's inside quotes.\"" msgstr "" "# これは最初のコメント\n" "spam = 1 # そしてこれは2つめのコメント\n" " # ...そして3つめ!\n" "text = \"# これはクォーテーションの間なのでコメントではない。\"" #: ../../tutorial/introduction.rst:41 msgid "Using Python as a Calculator" msgstr "Python を電卓として使う" msgid "" "Let's try some simple Python commands. Start the interpreter and wait for " "the primary prompt, ``>>>``. (It shouldn't take long.)" msgstr "" "簡単な Python コマンドをいくつか試してみましょう。インタープリタを起動し、一" "次プロンプト ``>>>`` が表示されるのを待ちます。(すぐに表示されるはずです。)" #: ../../tutorial/introduction.rst:50 msgid "Numbers" msgstr "数" msgid "" "The interpreter acts as a simple calculator: you can type an expression into " "it and it will write the value. Expression syntax is straightforward: the " "operators ``+``, ``-``, ``*`` and ``/`` can be used to perform arithmetic; " "parentheses (``()``) can be used for grouping. For example::" msgstr "" "インタープリタは簡単な電卓のように動作し、式を入力するとその値を表示します。" "式の構文は単純です。演算子 ``+`` 、 ``-`` 、 ``*`` 、 ``/`` で算術演算を行" "い、丸括弧 (``()``) で式をまとめられます。例えば次のように使います::" msgid "" ">>> 2 + 2\n" "4\n" ">>> 50 - 5*6\n" "20\n" ">>> (50 - 5*6) / 4\n" "5.0\n" ">>> 8 / 5 # division always returns a floating-point number\n" "1.6" msgstr "" ">>> 2 + 2\n" "4\n" ">>> 50 - 5*6\n" "20\n" ">>> (50 - 5*6) / 4\n" "5.0\n" ">>> 8 / 5 # 除算は常に浮動小数点数を返す\n" "1.6" msgid "" "The integer numbers (e.g. ``2``, ``4``, ``20``) have type :class:`int`, the " "ones with a fractional part (e.g. ``5.0``, ``1.6``) have " "type :class:`float`. We will see more about numeric types later in the " "tutorial." msgstr "" "整数 (例えば ``2`` 、 ``4`` 、 ``20``) は :class:`int` 型で、小数部を持つ数 " "(例えば ``5.0`` 、 ``1.6``) は :class:`float` 型です。数値型についてはこの" "チュートリアルの後の節で詳しく説明します。" msgid "" "Division (``/``) always returns a float. To do :term:`floor division` and " "get an integer result you can use the ``//`` operator; to calculate the " "remainder you can use ``%``::" msgstr "" "除算 (``/``) は常に浮動小数点数を返します。 :term:`切り捨て除算 <floor " "division>` で整数の結果を得るには ``//`` 演算子を使います。剰余は ``%`` で求" "められます::" msgid "" ">>> 17 / 3 # classic division returns a float\n" "5.666666666666667\n" ">>>\n" ">>> 17 // 3 # floor division discards the fractional part\n" "5\n" ">>> 17 % 3 # the % operator returns the remainder of the division\n" "2\n" ">>> 5 * 3 + 2 # floored quotient * divisor + remainder\n" "17" msgstr "" ">>> 17 / 3 # 除算は浮動小数点数を返す\n" "5.666666666666667\n" ">>>\n" ">>> 17 // 3 # 切り捨て除算は小数部を切り捨てる\n" "5\n" ">>> 17 % 3 # % 演算子は剰余を返す\n" "2\n" ">>> 5 * 3 + 2 # 切り捨てられた商 * 除数 + 剰余\n" "17" msgid "" "With Python, it is possible to use the ``**`` operator to calculate powers " "[#]_::" msgstr "Python では ``**`` 演算子で冪乗を計算できます [#]_::" #: ../../tutorial/introduction.rst:87 msgid "" ">>> 5 ** 2 # 5 squared\n" "25\n" ">>> 2 ** 7 # 2 to the power of 7\n" "128" msgstr "" ">>> 5 ** 2 # 5の2乗\n" "25\n" ">>> 2 ** 7 # 2の7乗\n" "128" msgid "" "The equal sign (``=``) is used to assign a value to a variable. Afterwards, " "no result is displayed before the next interactive prompt::" msgstr "" "等号 (``=``) は変数に値を代入するときに使います。代入後は結果を表示せずに次の" "対話プロンプトに進みます::" #: ../../tutorial/introduction.rst:95 msgid "" ">>> width = 20\n" ">>> height = 5 * 9\n" ">>> width * height\n" "900" msgstr "" ">>> width = 20\n" ">>> height = 5 * 9\n" ">>> width * height\n" "900" msgid "" "If a variable is not \"defined\" (assigned a value), trying to use it will " "give you an error::" msgstr "" "「定義」されていない (値が代入されていない) 変数を使おうとするとエラーになり" "ます::" #: ../../tutorial/introduction.rst:103 msgid "" ">>> n # try to access an undefined variable\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "NameError: name 'n' is not defined" msgstr "" ">>> n # 未定義の変数にアクセスする\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "NameError: name 'n' is not defined" msgid "" "There is full support for floating point; operators with mixed type operands " "convert the integer operand to floating point::" msgstr "" "浮動小数点数も全面的にサポートしています。整数と浮動小数点数が混在する演算で" "は、演算子が整数のオペランドを浮動小数点数に変換します::" #: ../../tutorial/introduction.rst:111 msgid "" ">>> 4 * 3.75 - 1\n" "14.0" msgstr "" ">>> 4 * 3.75 - 1\n" "14.0" msgid "" "In interactive mode, the last printed expression is assigned to the variable " "``_``. This means that when you are using Python as a desk calculator, it " "is somewhat easier to continue calculations, for example::" msgstr "" "対話モードでは最後に表示された式の値が変数 ``_`` に代入されます。この変数を使" "うと、Python を電卓として使うときに続きの計算が少し楽になります。例えば次のよ" "うに使います::" #: ../../tutorial/introduction.rst:118 msgid "" ">>> tax = 12.5 / 100\n" ">>> price = 100.50\n" ">>> price * tax\n" "12.5625\n" ">>> price + _\n" "113.0625\n" ">>> round(_, 2)\n" "113.06" msgstr "" ">>> tax = 12.5 / 100\n" ">>> price = 100.50\n" ">>> price * tax\n" "12.5625\n" ">>> price + _\n" "113.0625\n" ">>> round(_, 2)\n" "113.06" msgid "" "This variable should be treated as read-only by the user. Don't explicitly " "assign a value to it --- you would create an independent local variable with " "the same name masking the built-in variable with its magic behavior." msgstr "" "この変数は読み取り専用として扱い、明示的に値を代入しないでください。代入する" "と同じ名前の別のローカル変数が作られ、特別な動作をする組み込み変数が隠されて" "しまいます。" msgid "" "In addition to :class:`int` and :class:`float`, Python supports other types " "of numbers, such as :class:`~decimal.Decimal` " "and :class:`~fractions.Fraction`. Python also has built-in support " "for :ref:`complex numbers <typesnumeric>`, and uses the ``j`` or ``J`` " "suffix to indicate the imaginary part (e.g. ``3+5j``)." msgstr "" "Python は :class:`int` と :class:`float` のほか" "に、 :class:`~decimal.Decimal` や :class:`~fractions.Fraction` などの数値型も" "サポートしています。 :ref:`複素数 <typesnumeric>` も組み込みでサポートしてお" "り、接尾辞 ``j`` または ``J`` で虚部を表します (例: ``3+5j``)。" #: ../../tutorial/introduction.rst:141 msgid "Text" msgstr "テキスト" msgid "" "Python can manipulate text (represented by type :class:`str`, so-called " "\"strings\") as well as numbers. This includes characters \"``!``\", words " "\"``rabbit``\", names \"``Paris``\", sentences \"``Got your back.``\", etc. " "\"``Yay! :)``\". They can be enclosed in single quotes (``'...'``) or double " "quotes (``\"...\"``) with the same result [#]_." msgstr "" "Python は数値だけでなくテキストも扱えます。テキストは :class:`str` 型で表さ" "れ、一般に「文字列」と呼ばれます。 \"``!``\" のような文字、 \"``rabbit``\" の" "ような単語、 \"``Paris``\" のような名前、 \"``Got your back.``\" や " "\"``Yay! :)``\" のような文や表現などです。文字列はシングルクォート " "(``'...'``) またはダブルクォート (``\"...\"``) で囲み、どちらを使っても同じ結" "果になります [#]_ 。" #: ../../tutorial/introduction.rst:149 msgid "" ">>> 'spam eggs' # single quotes\n" "'spam eggs'\n" ">>> \"Paris rabbit got your back :)! Yay!\" # double quotes\n" "'Paris rabbit got your back :)! Yay!'\n" ">>> '1975' # digits and numerals enclosed in quotes are also strings\n" "'1975'" msgstr "" ">>> 'spam eggs' # シングルクォート\n" "'spam eggs'\n" ">>> \"Paris rabbit got your back :)! Yay!\" # ダブルクォート\n" "'Paris rabbit got your back :)! Yay!'\n" ">>> '1975' # クォートに囲まれた数字も文字列\n" "'1975'" msgid "" "To quote a quote, we need to \"escape\" it, by preceding it with ``\\``. " "Alternatively, we can use the other type of quotation marks::" msgstr "" "文字列を囲むクォートと同じクォートを文字列の中に書くには、直前に ``\\`` を付" "けて「エスケープ」します。別の種類のクォートで文字列を囲む方法もあります::" #: ../../tutorial/introduction.rst:161 msgid "" ">>> 'doesn\\'t' # use \\' to escape the single quote...\n" "\"doesn't\"\n" ">>> \"doesn't\" # ...or use double quotes instead\n" "\"doesn't\"\n" ">>> '\"Yes,\" they said.'\n" "'\"Yes,\" they said.'\n" ">>> \"\\\"Yes,\\\" they said.\"\n" "'\"Yes,\" they said.'\n" ">>> '\"Isn\\'t,\" they said.'\n" "'\"Isn\\'t,\" they said.'" msgstr "" ">>> 'doesn\\'t' # \\' を使用してシングルクォートをエスケープする\n" "\"doesn't\"\n" ">>> \"doesn't\" # または代わりにダブルクォートを使用する\n" "\"doesn't\"\n" ">>> '\"Yes,\" they said.'\n" "'\"Yes,\" they said.'\n" ">>> \"\\\"Yes,\\\" they said.\"\n" "'\"Yes,\" they said.'\n" ">>> '\"Isn\\'t,\" they said.'\n" "'\"Isn\\'t,\" they said.'" msgid "" "In the Python shell, the string definition and output string can look " "different. The :func:`print` function produces a more readable output, by " "omitting the enclosing quotes and by printing escaped and special " "characters::" msgstr "" "Python シェルでは文字列を定義するときと出力するときで見た目が異なることがあり" "ます。 :func:`print` 関数は文字列を囲むクォートを省き、エスケープされた文字や" "特殊文字を表示して読みやすく出力します::" #: ../../tutorial/introduction.rst:176 msgid "" ">>> s = 'First line.\\nSecond line.' # \\n means newline\n" ">>> s # without print(), special characters are included in the string\n" "'First line.\\nSecond line.'\n" ">>> print(s) # with print(), special characters are interpreted, so \\n " "produces new line\n" "First line.\n" "Second line." msgstr "" ">>> s = 'First line.\\nSecond line.' # \\n は改行を意味する\n" ">>> s # print() を使用しない場合、特殊文字が文字列に含まれる\n" "'First line.\\nSecond line.'\n" ">>> print(s) # print() では特殊文字は解釈されるため、\\n は改行となる\n" "First line.\n" "Second line." msgid "" "If you don't want characters prefaced by ``\\`` to be interpreted as special " "characters, you can use *raw strings* by adding an ``r`` before the first " "quote::" msgstr "" "``\\`` に続く文字を特殊文字として解釈させたくない場合は、最初のクォートの前" "に ``r`` を付けて *raw string* (生の文字列) にできます::" msgid "" ">>> print('C:\\this\\name') # here \\t means tab, \\n means newline\n" "C: his\n" "ame\n" ">>> print(r'C:\\this\\name') # note the r before the quote\n" "C:\\this\\name" msgstr "" ">>> print('C:\\this\\name') # ここでは \\t はタブ、\\n は改行を表す\n" "C: his\n" "ame\n" ">>> print(r'C:\\this\\name') # クォートの前の r に注目\n" "C:\\this\\name" msgid "" "There is one subtle aspect to raw strings: a raw string may not end in an " "odd number of ``\\`` characters; see :ref:`the FAQ entry <faq-programming-" "raw-string-backslash>` for more information and workarounds." msgstr "" "raw string には注意点が1つあります。末尾に奇数個の ``\\`` を連続して置くこと" "はできません。詳しい説明と回避方法は :ref:`FAQ の該当項目 <faq-programming-" "raw-string-backslash>` を参照してください。" msgid "" "String literals can span multiple lines. One way is using triple-quotes: " "``\"\"\"...\"\"\"`` or ``'''...'''``. End-of-line characters are " "automatically included in the string, but it's possible to prevent this by " "adding a ``\\`` at the end of the line. In the following example, the " "initial newline is not included::" msgstr "" "文字列リテラルは複数行にまたがって書けます。1つの方法は三重引用符 " "(``\"\"\"...\"\"\"`` や ``'''...'''``) を使うことです。改行文字は自動的に文字" "列に含まれますが、行末に ``\\`` を付けると改行文字を含めずに済みます。次の例" "では最初の改行は含まれません::" #: ../../tutorial/introduction.rst:204 msgid "" ">>> print(\"\"\"\\\n" "... Usage: thingy [OPTIONS]\n" "... -h Display this usage message\n" "... -H hostname Hostname to connect to\n" "... \"\"\")\n" "Usage: thingy [OPTIONS]\n" " -h Display this usage message\n" " -H hostname Hostname to connect to\n" "\n" ">>>" msgstr "" ">>> print(\"\"\"\\\n" "... Usage: thingy [OPTIONS]\n" "... -h Display this usage message\n" "... -H hostname Hostname to connect to\n" "... \"\"\")\n" "Usage: thingy [OPTIONS]\n" " -h Display this usage message\n" " -H hostname Hostname to connect to\n" "\n" ">>>" msgid "" "Strings can be concatenated (glued together) with the ``+`` operator, and " "repeated with ``*``::" msgstr "文字列は ``+`` 演算子で連結し、 ``*`` 演算子で繰り返せます::" #: ../../tutorial/introduction.rst:218 msgid "" ">>> # 3 times 'un', followed by 'ium'\n" ">>> 3 * 'un' + 'ium'\n" "'unununium'" msgstr "" ">>> # 'un' を3回繰り返し、その後に 'ium'\n" ">>> 3 * 'un' + 'ium'\n" "'unununium'" msgid "" "Two or more *string literals* (i.e. the ones enclosed between quotes) next " "to each other are automatically concatenated. ::" msgstr "" "2つ以上の *文字列リテラル* (クォートで囲んだもの) を隣り合わせに書くと、自動" "的に連結されます::" #: ../../tutorial/introduction.rst:225 msgid "" ">>> 'Py' 'thon'\n" "'Python'" msgstr "" ">>> 'Py' 'thon'\n" "'Python'" msgid "" "This feature is particularly useful when you want to break long strings::" msgstr "この機能は長い文字列を複数行に分けて書きたいときに特に便利です::" #: ../../tutorial/introduction.rst:230 msgid "" ">>> text = ('Put several strings within parentheses '\n" "... 'to have them joined together.')\n" ">>> text\n" "'Put several strings within parentheses to have them joined together.'" msgstr "" ">>> text = ('複数の文字列を丸括弧で囲むと'\n" "... '連結される。')\n" ">>> text\n" "'複数の文字列を丸括弧で囲むと連結される。'" msgid "" "This only works with two literals though, not with variables or expressions::" msgstr "" "ただし、この方法で連結できるのはリテラルどうしだけです。\n" "変数や式には使えません。 ::" #: ../../tutorial/introduction.rst:237 msgid "" ">>> prefix = 'Py'\n" ">>> prefix 'thon' # can't concatenate a variable and a string literal\n" " File \"<stdin>\", line 1\n" " prefix 'thon'\n" " ^^^^^^\n" "SyntaxError: invalid syntax\n" ">>> ('un' * 3) 'ium'\n" " File \"<stdin>\", line 1\n" " ('un' * 3) 'ium'\n" " ^^^^^\n" "SyntaxError: invalid syntax" msgstr "" ">>> prefix = 'Py'\n" ">>> prefix 'thon' # 変数と文字列リテラルは連結できない\n" " File \"<stdin>\", line 1\n" " prefix 'thon'\n" " ^^^^^^\n" "SyntaxError: invalid syntax\n" ">>> ('un' * 3) 'ium'\n" " File \"<stdin>\", line 1\n" " ('un' * 3) 'ium'\n" " ^^^^^\n" "SyntaxError: invalid syntax" msgid "" "If you want to concatenate variables or a variable and a literal, use ``+``::" msgstr "変数どうしや変数とリテラルを連結するには ``+`` を使います::" #: ../../tutorial/introduction.rst:251 msgid "" ">>> prefix + 'thon'\n" "'Python'" msgstr "" ">>> prefix + 'thon'\n" "'Python'" msgid "" "Strings can be *indexed* (subscripted), with the first character having " "index 0. There is no separate character type; a character is simply a string " "of size one::" msgstr "" "文字列では *インデックス* (添字) を指定して文字を取得できます。最初の文字のイ" "ンデックスは 0 です。文字専用の型はなく、1文字も長さ1の文字列として扱います::" #: ../../tutorial/introduction.rst:258 msgid "" ">>> word = 'Python'\n" ">>> word[0] # character in position 0\n" "'P'\n" ">>> word[5] # character in position 5\n" "'n'" msgstr "" ">>> word = 'Python'\n" ">>> word[0] # 0番目の文字\n" "'P'\n" ">>> word[5] # 5番目の文字\n" "'n'" msgid "" "Indices may also be negative numbers, to start counting from the right::" msgstr "インデックスに負の数を指定すると、右から数えて文字を取得できます::" #: ../../tutorial/introduction.rst:266 msgid "" ">>> word[-1] # last character\n" "'n'\n" ">>> word[-2] # second-last character\n" "'o'\n" ">>> word[-6]\n" "'P'" msgstr "" ">>> word[-1] # 最後の文字\n" "'n'\n" ">>> word[-2] # 後ろから2番目の文字\n" "'o'\n" ">>> word[-6]\n" "'P'" #: ../../tutorial/introduction.rst:273 msgid "Note that since -0 is the same as 0, negative indices start from -1." msgstr "-0 は 0 と区別できないので、負のインデックスは -1 から始まります。" msgid "" "In addition to indexing, *slicing* is also supported. While indexing is " "used to obtain individual characters, *slicing* allows you to obtain a " "substring::" msgstr "" "インデックス指定に加えて *スライス* も使えます。インデックス指定では個々の文" "字を取得し、 *スライス* では部分文字列を取得できます::" #: ../../tutorial/introduction.rst:278 msgid "" ">>> word[0:2] # characters from position 0 (included) to 2 (excluded)\n" "'Py'\n" ">>> word[2:5] # characters from position 2 (included) to 5 (excluded)\n" "'tho'" msgstr "" ">>> word[0:2] # 0番目(含む)から2番目(含めない)までの文字\n" "'Py'\n" ">>> word[2:5] # 2番目(含む)から5番目(含めない)までの文字\n" "'tho'" msgid "" "Slice indices have useful defaults; an omitted first index defaults to zero, " "an omitted second index defaults to the size of the string being sliced. ::" msgstr "" "スライスのインデックスには便利なデフォルト値があります。最初のインデックスを" "省略すると 0 になり、2つ目を省略すると対象の文字列の長さになります::" #: ../../tutorial/introduction.rst:286 msgid "" ">>> word[:2] # character from the beginning to position 2 (excluded)\n" "'Py'\n" ">>> word[4:] # characters from position 4 (included) to the end\n" "'on'\n" ">>> word[-2:] # characters from the second-last (included) to the end\n" "'on'" msgstr "" ">>> word[:2] # 最初から2番目(含めない)までの文字\n" "'Py'\n" ">>> word[4:] # 4番目(含む)から最後までの文字\n" "'on'\n" ">>> word[-2:] # 後ろから2番目(含む)から最後までの文字\n" "'on'" msgid "" "Note how the start is always included, and the end always excluded. This " "makes sure that ``s[:i] + s[i:]`` is always equal to ``s``::" msgstr "" "開始位置の文字は常に含まれ、終了位置の文字は常に含まれません。このため " "``s[:i] + s[i:]`` は常に ``s`` と等しくなります::" #: ../../tutorial/introduction.rst:296 msgid "" ">>> word[:2] + word[2:]\n" "'Python'\n" ">>> word[:4] + word[4:]\n" "'Python'" msgstr "" ">>> word[:2] + word[2:]\n" "'Python'\n" ">>> word[:4] + word[4:]\n" "'Python'" msgid "" "One way to remember how slices work is to think of the indices as pointing " "*between* characters, with the left edge of the first character numbered 0. " "Then the right edge of the last character of a string of *n* characters has " "index *n*, for example::" msgstr "" "スライスの仕組みを覚えるには、インデックスが文字と文字の *間* を指し、最初の" "文字の左端を 0 と考えるとよいでしょう。すると、長さ *n* の文字列では最後の文" "字の右端のインデックスが *n* になります。例えば次のようになります::" #: ../../tutorial/introduction.rst:306 msgid "" " +---+---+---+---+---+---+\n" " | P | y | t | h | o | n |\n" " +---+---+---+---+---+---+\n" " 0 1 2 3 4 5 6\n" "-6 -5 -4 -3 -2 -1" msgstr "" " +---+---+---+---+---+---+\n" " | P | y | t | h | o | n |\n" " +---+---+---+---+---+---+\n" " 0 1 2 3 4 5 6\n" "-6 -5 -4 -3 -2 -1" msgid "" "The first row of numbers gives the position of the indices 0...6 in the " "string; the second row gives the corresponding negative indices. The slice " "from *i* to *j* consists of all characters between the edges labeled *i* and " "*j*, respectively." msgstr "" "数字の1行目は文字列内のインデックス 0 から 6 の位置を示し、2行目は対応する負" "のインデックスを示しています。*i* から *j* までのスライスには、*i* と *j* の" "印を付けた境界の間にあるすべての文字が含まれます。" msgid "" "For non-negative indices, the length of a slice is the difference of the " "indices, if both are within bounds. For example, the length of " "``word[1:3]`` is 2." msgstr "" "両端のインデックスが非負で文字列の範囲内にある場合、スライスの長さは2つのイン" "デックスの差になります。例えば ``word[1:3]`` の長さは 2 です。" #: ../../tutorial/introduction.rst:321 msgid "Attempting to use an index that is too large will result in an error::" msgstr "大き過ぎるインデックスを使おうとするとエラーが発生します::" msgid "" ">>> word[42] # the word only has 6 characters\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "IndexError: string index out of range" msgstr "" ">>> word[42] # 文字列は6文字しかない\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "IndexError: string index out of range" msgid "" "However, out of range slice indexes are handled gracefully when used for " "slicing::" msgstr "一方、スライスではインデックスが範囲外でもエラーになりません::" #: ../../tutorial/introduction.rst:331 msgid "" ">>> word[4:42]\n" "'on'\n" ">>> word[42:]\n" "''" msgstr "" ">>> word[4:42]\n" "'on'\n" ">>> word[42:]\n" "''" msgid "" "Python strings cannot be changed --- they are :term:`immutable`. Therefore, " "assigning to an indexed position in the string results in an error::" msgstr "" "Python の文字列は :term:`不変 <immutable>` で、内容を変更できません。そのた" "め、文字列のインデックスで指定した位置に代入するとエラーになります::" #: ../../tutorial/introduction.rst:339 msgid "" ">>> word[0] = 'J'\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "TypeError: 'str' object does not support item assignment\n" ">>> word[2:] = 'py'\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "TypeError: 'str' object does not support item assignment" msgstr "" ">>> word[0] = 'J'\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "TypeError: 'str' object does not support item assignment\n" ">>> word[2:] = 'py'\n" "Traceback (most recent call last):\n" " File \"<stdin>\", line 1, in <module>\n" "TypeError: 'str' object does not support item assignment" msgid "If you need a different string, you should create a new one::" msgstr "別の文字列が必要な場合は新しく作成します::" #: ../../tutorial/introduction.rst:350 msgid "" ">>> 'J' + word[1:]\n" "'Jython'\n" ">>> word[:2] + 'py'\n" "'Pypy'" msgstr "" ">>> 'J' + word[1:]\n" "'Jython'\n" ">>> word[:2] + 'py'\n" "'Pypy'" msgid "The built-in function :func:`len` returns the length of a string::" msgstr "組み込み関数 :func:`len` は文字列の長さを返します::" #: ../../tutorial/introduction.rst:357 msgid "" ">>> s = 'supercalifragilisticexpialidocious'\n" ">>> len(s)\n" "34" msgstr "" ">>> s = 'supercalifragilisticexpialidocious'\n" ">>> len(s)\n" "34" #: ../../tutorial/introduction.rst:364 msgid ":ref:`textseq`" msgstr ":ref:`textseq`" msgid "" "Strings are examples of *sequence types*, and support the common operations " "supported by such types." msgstr "" "文字列は *シーケンス型* の一種で、シーケンス型に共通する操作を使えます。" #: ../../tutorial/introduction.rst:368 msgid ":ref:`string-methods`" msgstr ":ref:`string-methods`" msgid "" "Strings support a large number of methods for basic transformations and " "searching." msgstr "文字列には基本的な変換や検索を行うためのメソッドが数多くあります。" #: ../../tutorial/introduction.rst:372 msgid ":ref:`f-strings`" msgstr ":ref:`f-strings`" #: ../../tutorial/introduction.rst:373 msgid "String literals that have embedded expressions." msgstr "式の埋め込みをサポートした文字列リテラル" #: ../../tutorial/introduction.rst:375 msgid ":ref:`formatstrings`" msgstr ":ref:`formatstrings`" msgid "Information about string formatting with :meth:`str.format`." msgstr "" ":meth:`str.format` を使った文字列のフォーマットについて説明しています。" #: ../../tutorial/introduction.rst:378 msgid ":ref:`old-string-formatting`" msgstr ":ref:`old-string-formatting`" msgid "" "The old formatting operations invoked when strings are the left operand of " "the ``%`` operator are described in more detail here." msgstr "" "文字列を ``%`` 演算子の左オペランドに指定して行う従来のフォーマット操作につい" "て、詳しく説明しています。" #: ../../tutorial/introduction.rst:386 msgid "Lists" msgstr "リスト型 (list)" #: ../../tutorial/introduction.rst:388 msgid "" "Python knows a number of *compound* data types, used to group together other " "values. The most versatile is the *list*, which can be written as a list of " "comma-separated values (items) between square brackets. Lists might contain " "items of different types, but usually the items all have the same type. ::" msgstr "" "Pythonは多くの *複合 (compound)* データ型を備えており、複数の値をまとめるのに" "使われます。最も汎用性が高いのは *リスト (list)* で、コンマ区切りの値 (要素) " "の並びを角括弧で囲んだものとして書き表されます。リストは異なる型の要素を含む" "こともありますが、通常は同じ型の要素のみを持ちます。 ::" #: ../../tutorial/introduction.rst:393 msgid "" ">>> squares = [1, 4, 9, 16, 25]\n" ">>> squares\n" "[1, 4, 9, 16, 25]" msgstr "" ">>> squares = [1, 4, 9, 16, 25]\n" ">>> squares\n" "[1, 4, 9, 16, 25]" #: ../../tutorial/introduction.rst:397 msgid "" "Like strings (and all other built-in :term:`sequence` types), lists can be " "indexed and sliced::" msgstr "" "文字列 (や他の全ての組み込みの :term:`シーケンス <sequence>` 型) のように、リ" "ストはインデックスやスライスができます::" #: ../../tutorial/introduction.rst:400 msgid "" ">>> squares[0] # indexing returns the item\n" "1\n" ">>> squares[-1]\n" "25\n" ">>> squares[-3:] # slicing returns a new list\n" "[9, 16, 25]" msgstr "" ">>> squares[0] # インデックス指定は要素を返す\n" "1\n" ">>> squares[-1]\n" "25\n" ">>> squares[-3:] # スライスは新しいリストを返す\n" "[9, 16, 25]" #: ../../tutorial/introduction.rst:407 msgid "Lists also support operations like concatenation::" msgstr "リストは、リストの連結などもサポートしています::" #: ../../tutorial/introduction.rst:409 msgid "" ">>> squares + [36, 49, 64, 81, 100]\n" "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]" msgstr "" ">>> squares + [36, 49, 64, 81, 100]\n" "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]" msgid "" "Unlike strings, which are :term:`immutable`, lists are a :term:`mutable` " "type, i.e. it is possible to change their content::" msgstr "" ":term:`不変 <immutable>` な文字列とは違って、リストは :term:`可変 <mutable>` " "型ですので、内容を変更できます::" #: ../../tutorial/introduction.rst:415 msgid "" ">>> cubes = [1, 8, 27, 65, 125] # something's wrong here\n" ">>> 4 ** 3 # the cube of 4 is 64, not 65!\n" "64\n" ">>> cubes[3] = 64 # replace the wrong value\n" ">>> cubes\n" "[1, 8, 27, 64, 125]" msgstr "" ">>> cubes = [1, 8, 27, 65, 125] # 何かがおかしい\n" ">>> 4 ** 3 # 4の3乗は65ではなく64!\n" "64\n" ">>> cubes[3] = 64 # 誤った値を置き換える\n" ">>> cubes\n" "[1, 8, 27, 64, 125]" #: ../../tutorial/introduction.rst:422 msgid "" "You can also add new items at the end of the list, by using " "the :meth:`list.append` *method* (we will see more about methods later)::" msgstr "" ":meth:`list.append` *メソッド* を使って、リストの末尾に新しい要素を追加できま" "す (メソッドについては後で詳しく見ていきます)::" #: ../../tutorial/introduction.rst:425 msgid "" ">>> cubes.append(216) # add the cube of 6\n" ">>> cubes.append(7 ** 3) # and the cube of 7\n" ">>> cubes\n" "[1, 8, 27, 64, 125, 216, 343]" msgstr "" ">>> cubes.append(216) # 6の3乗を追加\n" ">>> cubes.append(7 ** 3) # 7の3乗を追加\n" ">>> cubes\n" "[1, 8, 27, 64, 125, 216, 343]" msgid "" "Simple assignment in Python never copies data. When you assign a list to a " "variable, the variable refers to the *existing list*. Any changes you make " "to the list through one variable will be seen through all other variables " "that refer to it.::" msgstr "" "単純な代入ではPythonは決してデータをコピーしません。リストを変数に代入する" "と、その変数は *既存のリスト* を参照します。ある変数を通してリストに任意の変" "更を行うと、同じリストを参照している他のすべての変数からもその変更を確認でき" "ます。::" #: ../../tutorial/introduction.rst:435 msgid "" ">>> rgb = [\"Red\", \"Green\", \"Blue\"]\n" ">>> rgba = rgb\n" ">>> id(rgb) == id(rgba) # they reference the same object\n" "True\n" ">>> rgba.append(\"Alph\")\n" ">>> rgb\n" "[\"Red\", \"Green\", \"Blue\", \"Alph\"]" msgstr "" ">>> rgb = [\"Red\", \"Green\", \"Blue\"]\n" ">>> rgba = rgb\n" ">>> id(rgb) == id(rgba) # 同じオブジェクトを参照している\n" "True\n" ">>> rgba.append(\"Alph\")\n" ">>> rgb\n" "[\"Red\", \"Green\", \"Blue\", \"Alph\"]" #: ../../tutorial/introduction.rst:443 msgid "" "All slice operations return a new list containing the requested elements. " "This means that the following slice returns a :ref:`shallow copy " "<shallow_vs_deep_copy>` of the list::" msgstr "" "全てのスライス操作は、指定された要素を含む新しいリストを返します。例えば、次" "のスライスは、リストの :ref:`浅いコピー <shallow_vs_deep_copy>` を返しま" "す。::" #: ../../tutorial/introduction.rst:447 msgid "" ">>> correct_rgba = rgba[:]\n" ">>> correct_rgba[-1] = \"Alpha\"\n" ">>> correct_rgba\n" "[\"Red\", \"Green\", \"Blue\", \"Alpha\"]\n" ">>> rgba\n" "[\"Red\", \"Green\", \"Blue\", \"Alph\"]" msgstr "" ">>> correct_rgba = rgba[:]\n" ">>> correct_rgba[-1] = \"Alpha\"\n" ">>> correct_rgba\n" "[\"Red\", \"Green\", \"Blue\", \"Alpha\"]\n" ">>> rgba\n" "[\"Red\", \"Green\", \"Blue\", \"Alph\"]" #: ../../tutorial/introduction.rst:454 msgid "" "Assignment to slices is also possible, and this can even change the size of " "the list or clear it entirely::" msgstr "" "スライスには、代入もできます。スライスの代入で、リストのサイズを変更したり、" "全てを削除したりもできます::" #: ../../tutorial/introduction.rst:457 msgid "" ">>> letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g']\n" ">>> letters\n" "['a', 'b', 'c', 'd', 'e', 'f', 'g']\n" ">>> # replace some values\n" ">>> letters[2:5] = ['C', 'D', 'E']\n" ">>> letters\n" "['a', 'b', 'C', 'D', 'E', 'f', 'g']\n" ">>> # now remove them\n" ">>> letters[2:5] = []\n" ">>> letters\n" |
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