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bisect.po
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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001-2025, Python Software Foundation
# This file is distributed under the same license as the Python package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
# Translators:
# tomo, 2021
# Takanori Suzuki <[email protected]>, 2021
# 石井明久, 2024
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: Python 3.13\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2025-04-11 14:19+0000\n"
"PO-Revision-Date: 2021-06-28 00:56+0000\n"
"Last-Translator: 石井明久, 2024\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"
#: ../../library/bisect.rst:2
msgid ":mod:`!bisect` --- Array bisection algorithm"
msgstr ":mod:`!bisect` --- 配列二分法アルゴリズム"
#: ../../library/bisect.rst:10
msgid "**Source code:** :source:`Lib/bisect.py`"
msgstr "**ソースコード:** :source:`Lib/bisect.py`"
#: ../../library/bisect.rst:14
msgid ""
"This module provides support for maintaining a list in sorted order without "
"having to sort the list after each insertion. For long lists of items with "
"expensive comparison operations, this can be an improvement over linear "
"searches or frequent resorting."
msgstr ""
#: ../../library/bisect.rst:19
msgid ""
"The module is called :mod:`bisect` because it uses a basic bisection "
"algorithm to do its work. Unlike other bisection tools that search for a "
"specific value, the functions in this module are designed to locate an "
"insertion point. Accordingly, the functions never call an :meth:`~object."
"__eq__` method to determine whether a value has been found. Instead, the "
"functions only call the :meth:`~object.__lt__` method and will return an "
"insertion point between values in an array."
msgstr ""
#: ../../library/bisect.rst:29
msgid "The following functions are provided:"
msgstr "次の関数が用意されています:"
#: ../../library/bisect.rst:34
msgid ""
"Locate the insertion point for *x* in *a* to maintain sorted order. The "
"parameters *lo* and *hi* may be used to specify a subset of the list which "
"should be considered; by default the entire list is used. If *x* is already "
"present in *a*, the insertion point will be before (to the left of) any "
"existing entries. The return value is suitable for use as the first "
"parameter to ``list.insert()`` assuming that *a* is already sorted."
msgstr ""
"ソートされた順序を保ったまま *x* を *a* に挿入できる点を探し当てます。リスト"
"の中から検索する部分集合を指定するには、パラメータの *lo* と *hi* を使いま"
"す。デフォルトでは、リスト全体が使われます。*x* がすでに *a* に含まれている場"
"合、挿入点は既存のどのエントリーよりも前(左)になります。戻り値は、``list."
"insert()`` の第一引数として使うのに適しています。*a* はすでにソートされている"
"ものとします。"
#: ../../library/bisect.rst:41
msgid ""
"The returned insertion point *ip* partitions the array *a* into two slices "
"such that ``all(elem < x for elem in a[lo : ip])`` is true for the left "
"slice and ``all(elem >= x for elem in a[ip : hi])`` is true for the right "
"slice."
msgstr ""
#: ../../library/bisect.rst:46
msgid ""
"*key* specifies a :term:`key function` of one argument that is used to "
"extract a comparison key from each element in the array. To support "
"searching complex records, the key function is not applied to the *x* value."
msgstr ""
#: ../../library/bisect.rst:50
msgid ""
"If *key* is ``None``, the elements are compared directly and no key function "
"is called."
msgstr ""
#: ../../library/bisect.rst:53 ../../library/bisect.rst:67
#: ../../library/bisect.rst:85 ../../library/bisect.rst:105
msgid "Added the *key* parameter."
msgstr "*key* パラメータが追加されました。"
#: ../../library/bisect.rst:60
msgid ""
"Similar to :py:func:`~bisect.bisect_left`, but returns an insertion point "
"which comes after (to the right of) any existing entries of *x* in *a*."
msgstr ""
#: ../../library/bisect.rst:63
msgid ""
"The returned insertion point *ip* partitions the array *a* into two slices "
"such that ``all(elem <= x for elem in a[lo : ip])`` is true for the left "
"slice and ``all(elem > x for elem in a[ip : hi])`` is true for the right "
"slice."
msgstr ""
#: ../../library/bisect.rst:73
msgid "Insert *x* in *a* in sorted order."
msgstr "*x* を *a* にソート順で挿入します。"
#: ../../library/bisect.rst:75
msgid ""
"This function first runs :py:func:`~bisect.bisect_left` to locate an "
"insertion point. Next, it runs the :meth:`!insert` method on *a* to insert "
"*x* at the appropriate position to maintain sort order."
msgstr ""
#: ../../library/bisect.rst:79 ../../library/bisect.rst:99
msgid ""
"To support inserting records in a table, the *key* function (if any) is "
"applied to *x* for the search step but not for the insertion step."
msgstr ""
#: ../../library/bisect.rst:82 ../../library/bisect.rst:102
msgid ""
"Keep in mind that the *O*\\ (log *n*) search is dominated by the slow *O*\\ "
"(*n*) insertion step."
msgstr ""
#: ../../library/bisect.rst:92
msgid ""
"Similar to :py:func:`~bisect.insort_left`, but inserting *x* in *a* after "
"any existing entries of *x*."
msgstr ""
#: ../../library/bisect.rst:95
msgid ""
"This function first runs :py:func:`~bisect.bisect_right` to locate an "
"insertion point. Next, it runs the :meth:`!insert` method on *a* to insert "
"*x* at the appropriate position to maintain sort order."
msgstr ""
#: ../../library/bisect.rst:110
msgid "Performance Notes"
msgstr "パフォーマンスに関するメモ"
#: ../../library/bisect.rst:112
msgid ""
"When writing time sensitive code using *bisect()* and *insort()*, keep these "
"thoughts in mind:"
msgstr ""
#: ../../library/bisect.rst:115
msgid ""
"Bisection is effective for searching ranges of values. For locating specific "
"values, dictionaries are more performant."
msgstr ""
#: ../../library/bisect.rst:118
msgid ""
"The *insort()* functions are *O*\\ (*n*) because the logarithmic search step "
"is dominated by the linear time insertion step."
msgstr ""
#: ../../library/bisect.rst:121
msgid ""
"The search functions are stateless and discard key function results after "
"they are used. Consequently, if the search functions are used in a loop, "
"the key function may be called again and again on the same array elements. "
"If the key function isn't fast, consider wrapping it with :py:func:"
"`functools.cache` to avoid duplicate computations. Alternatively, consider "
"searching an array of precomputed keys to locate the insertion point (as "
"shown in the examples section below)."
msgstr ""
#: ../../library/bisect.rst:131
msgid ""
"`Sorted Collections <https://grantjenks.com/docs/sortedcollections/>`_ is a "
"high performance module that uses *bisect* to managed sorted collections of "
"data."
msgstr ""
#: ../../library/bisect.rst:135
msgid ""
"The `SortedCollection recipe <https://code.activestate.com/recipes/577197-"
"sortedcollection/>`_ uses bisect to build a full-featured collection class "
"with straight-forward search methods and support for a key-function. The "
"keys are precomputed to save unnecessary calls to the key function during "
"searches."
msgstr ""
"bisect を利用して、直接の探索ができ、キー関数をサポートする、完全な機能を持つ"
"コレクションクラスを組み立てる `SortedCollection recipe <https://code."
"activestate.com/recipes/577197-sortedcollection/>`_\\ 。キーは、探索中に不必"
"要な呼び出しをさせないために、予め計算しておきます。"
#: ../../library/bisect.rst:143
msgid "Searching Sorted Lists"
msgstr "ソート済みリストの探索"
#: ../../library/bisect.rst:145
msgid ""
"The above `bisect functions`_ are useful for finding insertion points but "
"can be tricky or awkward to use for common searching tasks. The following "
"five functions show how to transform them into the standard lookups for "
"sorted lists::"
msgstr ""
#: ../../library/bisect.rst:150
msgid ""
"def index(a, x):\n"
" 'Locate the leftmost value exactly equal to x'\n"
" i = bisect_left(a, x)\n"
" if i != len(a) and a[i] == x:\n"
" return i\n"
" raise ValueError\n"
"\n"
"def find_lt(a, x):\n"
" 'Find rightmost value less than x'\n"
" i = bisect_left(a, x)\n"
" if i:\n"
" return a[i-1]\n"
" raise ValueError\n"
"\n"
"def find_le(a, x):\n"
" 'Find rightmost value less than or equal to x'\n"
" i = bisect_right(a, x)\n"
" if i:\n"
" return a[i-1]\n"
" raise ValueError\n"
"\n"
"def find_gt(a, x):\n"
" 'Find leftmost value greater than x'\n"
" i = bisect_right(a, x)\n"
" if i != len(a):\n"
" return a[i]\n"
" raise ValueError\n"
"\n"
"def find_ge(a, x):\n"
" 'Find leftmost item greater than or equal to x'\n"
" i = bisect_left(a, x)\n"
" if i != len(a):\n"
" return a[i]\n"
" raise ValueError"
msgstr ""
#: ../../library/bisect.rst:187
msgid "Examples"
msgstr "使用例"
#: ../../library/bisect.rst:191
msgid ""
"The :py:func:`~bisect.bisect` function can be useful for numeric table "
"lookups. This example uses :py:func:`~bisect.bisect` to look up a letter "
"grade for an exam score (say) based on a set of ordered numeric breakpoints: "
"90 and up is an 'A', 80 to 89 is a 'B', and so on::"
msgstr ""
#: ../../library/bisect.rst:196
msgid ""
">>> def grade(score, breakpoints=[60, 70, 80, 90], grades='FDCBA'):\n"
"... i = bisect(breakpoints, score)\n"
"... return grades[i]\n"
"...\n"
">>> [grade(score) for score in [33, 99, 77, 70, 89, 90, 100]]\n"
"['F', 'A', 'C', 'C', 'B', 'A', 'A']"
msgstr ""
#: ../../library/bisect.rst:203
msgid ""
"The :py:func:`~bisect.bisect` and :py:func:`~bisect.insort` functions also "
"work with lists of tuples. The *key* argument can serve to extract the "
"field used for ordering records in a table::"
msgstr ""
#: ../../library/bisect.rst:207
msgid ""
">>> from collections import namedtuple\n"
">>> from operator import attrgetter\n"
">>> from bisect import bisect, insort\n"
">>> from pprint import pprint\n"
"\n"
">>> Movie = namedtuple('Movie', ('name', 'released', 'director'))\n"
"\n"
">>> movies = [\n"
"... Movie('Jaws', 1975, 'Spielberg'),\n"
"... Movie('Titanic', 1997, 'Cameron'),\n"
"... Movie('The Birds', 1963, 'Hitchcock'),\n"
"... Movie('Aliens', 1986, 'Cameron')\n"
"... ]\n"
"\n"
">>> # Find the first movie released after 1960\n"
">>> by_year = attrgetter('released')\n"
">>> movies.sort(key=by_year)\n"
">>> movies[bisect(movies, 1960, key=by_year)]\n"
"Movie(name='The Birds', released=1963, director='Hitchcock')\n"
"\n"
">>> # Insert a movie while maintaining sort order\n"
">>> romance = Movie('Love Story', 1970, 'Hiller')\n"
">>> insort(movies, romance, key=by_year)\n"
">>> pprint(movies)\n"
"[Movie(name='The Birds', released=1963, director='Hitchcock'),\n"
" Movie(name='Love Story', released=1970, director='Hiller'),\n"
" Movie(name='Jaws', released=1975, director='Spielberg'),\n"
" Movie(name='Aliens', released=1986, director='Cameron'),\n"
" Movie(name='Titanic', released=1997, director='Cameron')]"
msgstr ""
#: ../../library/bisect.rst:237
msgid ""
"If the key function is expensive, it is possible to avoid repeated function "
"calls by searching a list of precomputed keys to find the index of a record::"
msgstr ""
#: ../../library/bisect.rst:240
msgid ""
">>> data = [('red', 5), ('blue', 1), ('yellow', 8), ('black', 0)]\n"
">>> data.sort(key=lambda r: r[1]) # Or use operator.itemgetter(1).\n"
">>> keys = [r[1] for r in data] # Precompute a list of keys.\n"
">>> data[bisect_left(keys, 0)]\n"
"('black', 0)\n"
">>> data[bisect_left(keys, 1)]\n"
"('blue', 1)\n"
">>> data[bisect_left(keys, 5)]\n"
"('red', 5)\n"
">>> data[bisect_left(keys, 8)]\n"
"('yellow', 8)"
msgstr ""