# Copyright (C) 2001 Python Software Foundation

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

#

# Translators:

msgid ""

msgstr ""

"Project-Id-Version: Python 3.14\n"

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

"POT-Creation-Date: 2026-03-22 00:20+0000\n"

"PO-Revision-Date: 2016-11-19 00:29+0000\n"

"Last-Translator: Liang-Bo Wang <[email protected]>\n"

"Language-Team: Chinese - TAIWAN (https://github.com/python/python-docs-zh-"

"tw)\n"

"Language: zh_TW\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/difflib.rst:2

msgid ":mod:`!difflib` --- Helpers for computing deltas"

msgstr ":mod:`!difflib` --- 計算差異的輔助工具"

#: ../../library/difflib.rst:11

msgid "**Source code:** :source:`Lib/difflib.py`"

msgstr "**原始碼：**\\ :source:`Lib/difflib.py`"

#: ../../library/difflib.rst:20

msgid ""

"This module provides classes and functions for comparing sequences. It can "

"be used for example, for comparing files, and can produce information about "

"file differences in various formats, including HTML and context and unified "

"diffs. For comparing directories and files, see also, the :mod:`filecmp` "

"module."

msgstr ""

#: ../../library/difflib.rst:29

msgid ""

"This is a flexible class for comparing pairs of sequences of any type, so "

"long as the sequence elements are :term:`hashable`. The basic algorithm "

"predates, and is a little fancier than, an algorithm published in the late "

"1980's by Ratcliff and Obershelp under the hyperbolic name \"gestalt pattern "

"matching.\" The idea is to find the longest contiguous matching subsequence "

"that contains no \"junk\" elements; these \"junk\" elements are ones that "

"are uninteresting in some sense, such as blank lines or whitespace. "

"(Handling junk is an extension to the Ratcliff and Obershelp algorithm.) The "

"same idea is then applied recursively to the pieces of the sequences to the "

"left and to the right of the matching subsequence. This does not yield "

"minimal edit sequences, but does tend to yield matches that \"look right\" "

"to people."

msgstr ""

#: ../../library/difflib.rst:41

msgid ""

"**Timing:** The basic Ratcliff-Obershelp algorithm is cubic time in the "

"worst case and quadratic time in the expected case. :class:`SequenceMatcher` "

"is quadratic time for the worst case and has expected-case behavior "

"dependent in a complicated way on how many elements the sequences have in "

"common; best case time is linear."

msgstr ""

#: ../../library/difflib.rst:47

msgid ""

"**Automatic junk heuristic:** :class:`SequenceMatcher` supports a heuristic "

"that automatically treats certain sequence items as junk. The heuristic "

"counts how many times each individual item appears in the sequence. If an "

"item's duplicates (after the first one) account for more than 1% of the "

"sequence and the sequence is at least 200 items long, this item is marked as "

"\"popular\" and is treated as junk for the purpose of sequence matching. "

"This heuristic can be turned off by setting the ``autojunk`` argument to "

"``False`` when creating the :class:`SequenceMatcher`."

msgstr ""

#: ../../library/difflib.rst:55 ../../library/difflib.rst:386

msgid "Added the *autojunk* parameter."

msgstr "新增 *autojunk* 參數。"

#: ../../library/difflib.rst:61

msgid ""

"This is a class for comparing sequences of lines of text, and producing "

"human-readable differences or deltas. Differ uses :class:`SequenceMatcher` "

"both to compare sequences of lines, and to compare sequences of characters "

"within similar (near-matching) lines."

msgstr ""

#: ../../library/difflib.rst:66

msgid "Each line of a :class:`Differ` delta begins with a two-letter code:"

msgstr ""

#: ../../library/difflib.rst:69

msgid "Code"

msgstr "程式碼"

#: ../../library/difflib.rst:69 ../../library/difflib.rst:496

msgid "Meaning"

msgstr "含義"

#: ../../library/difflib.rst:71

msgid "``'- '``"

msgstr "``'- '``"

#: ../../library/difflib.rst:71

msgid "line unique to sequence 1"

msgstr ""

#: ../../library/difflib.rst:73

msgid "``'+ '``"

msgstr "``'+ '``"

#: ../../library/difflib.rst:73

msgid "line unique to sequence 2"

msgstr ""

#: ../../library/difflib.rst:75

msgid "``' '``"

msgstr "``' '``"

#: ../../library/difflib.rst:75

msgid "line common to both sequences"

msgstr ""

#: ../../library/difflib.rst:77

msgid "``'? '``"

msgstr "``'? '``"

#: ../../library/difflib.rst:77

msgid "line not present in either input sequence"

msgstr ""

#: ../../library/difflib.rst:80

msgid ""

"Lines beginning with '``?``' attempt to guide the eye to intraline "

"differences, and were not present in either input sequence. These lines can "

"be confusing if the sequences contain whitespace characters, such as spaces, "

"tabs or line breaks."

msgstr ""

#: ../../library/difflib.rst:87

msgid ""

"This class can be used to create an HTML table (or a complete HTML file "

"containing the table) showing a side by side, line by line comparison of "

"text with inter-line and intra-line change highlights. The table can be "

"generated in either full or contextual difference mode."

msgstr ""

#: ../../library/difflib.rst:92

msgid "The constructor for this class is:"

msgstr ""

#: ../../library/difflib.rst:97

msgid "Initializes instance of :class:`HtmlDiff`."

msgstr ""

#: ../../library/difflib.rst:99

msgid ""

"*tabsize* is an optional keyword argument to specify tab stop spacing and "

"defaults to ``8``."

msgstr ""

#: ../../library/difflib.rst:102

msgid ""

"*wrapcolumn* is an optional keyword to specify column number where lines are "

"broken and wrapped, defaults to ``None`` where lines are not wrapped."

msgstr ""

#: ../../library/difflib.rst:105

msgid ""

"*linejunk* and *charjunk* are optional keyword arguments passed into :func:"

"`ndiff` (used by :class:`HtmlDiff` to generate the side by side HTML "

"differences). See :func:`ndiff` documentation for argument default values "

"and descriptions."

msgstr ""

#: ../../library/difflib.rst:109

msgid "The following methods are public:"

msgstr ""

#: ../../library/difflib.rst:114

msgid ""

"Compares *fromlines* and *tolines* (lists of strings) and returns a string "

"which is a complete HTML file containing a table showing line by line "

"differences with inter-line and intra-line changes highlighted."

msgstr ""

#: ../../library/difflib.rst:118

msgid ""

"*fromdesc* and *todesc* are optional keyword arguments to specify from/to "

"file column header strings (both default to an empty string)."

msgstr ""

#: ../../library/difflib.rst:121

msgid ""

"*context* and *numlines* are both optional keyword arguments. Set *context* "

"to ``True`` when contextual differences are to be shown, else the default is "

"``False`` to show the full files. *numlines* defaults to ``5``. When "

"*context* is ``True`` *numlines* controls the number of context lines which "

"surround the difference highlights. When *context* is ``False`` *numlines* "

"controls the number of lines which are shown before a difference highlight "

"when using the \"next\" hyperlinks (setting to zero would cause the \"next\" "

"hyperlinks to place the next difference highlight at the top of the browser "

"without any leading context)."

msgstr ""

#: ../../library/difflib.rst:132

msgid ""

"*fromdesc* and *todesc* are interpreted as unescaped HTML and should be "

"properly escaped while receiving input from untrusted sources."

msgstr ""

#: ../../library/difflib.rst:135

msgid ""

"*charset* keyword-only argument was added. The default charset of HTML "

"document changed from ``'ISO-8859-1'`` to ``'utf-8'``."

msgstr ""

#: ../../library/difflib.rst:141

msgid ""

"Compares *fromlines* and *tolines* (lists of strings) and returns a string "

"which is a complete HTML table showing line by line differences with inter-"

"line and intra-line changes highlighted."

msgstr ""

#: ../../library/difflib.rst:145

msgid ""

"The arguments for this method are the same as those for the :meth:"

"`make_file` method."

msgstr ""

#: ../../library/difflib.rst:152

msgid ""

"Compare *a* and *b* (lists of strings); return a delta (a :term:`generator` "

"generating the delta lines) in context diff format."

msgstr ""

#: ../../library/difflib.rst:155

msgid ""

"Context diffs are a compact way of showing just the lines that have changed "

"plus a few lines of context. The changes are shown in a before/after "

"style. The number of context lines is set by *n* which defaults to three."

msgstr ""

#: ../../library/difflib.rst:159

msgid ""

"By default, the diff control lines (those with ``***`` or ``---``) are "

"created with a trailing newline. This is helpful so that inputs created "

"from :func:`io.IOBase.readlines` result in diffs that are suitable for use "

"with :func:`io.IOBase.writelines` since both the inputs and outputs have "

"trailing newlines."

msgstr ""

#: ../../library/difflib.rst:165 ../../library/difflib.rst:297

msgid ""

"For inputs that do not have trailing newlines, set the *lineterm* argument "

"to ``\"\"`` so that the output will be uniformly newline free."

msgstr ""

#: ../../library/difflib.rst:168

msgid ""

"The context diff format normally has a header for filenames and modification "

"times. Any or all of these may be specified using strings for *fromfile*, "

"*tofile*, *fromfiledate*, and *tofiledate*. The modification times are "

"normally expressed in the ISO 8601 format. If not specified, the strings "

"default to blanks."

msgstr ""

#: ../../library/difflib.rst:194 ../../library/difflib.rst:320

msgid "See :ref:`difflib-interface` for a more detailed example."

msgstr "一個更詳盡的範例請見 :ref:`difflib-interface`。"

#: ../../library/difflib.rst:199

msgid ""

"Return a list of the best \"good enough\" matches. *word* is a sequence for "

"which close matches are desired (typically a string), and *possibilities* is "

"a list of sequences against which to match *word* (typically a list of "

"strings)."

msgstr ""

#: ../../library/difflib.rst:203

msgid ""

"Optional argument *n* (default ``3``) is the maximum number of close matches "

"to return; *n* must be greater than ``0``."

msgstr ""

#: ../../library/difflib.rst:206

msgid ""

"Optional argument *cutoff* (default ``0.6``) is a float in the range [0, 1]. "

"Possibilities that don't score at least that similar to *word* are ignored."

msgstr ""

#: ../../library/difflib.rst:209

msgid ""

"The best (no more than *n*) matches among the possibilities are returned in "

"a list, sorted by similarity score, most similar first."

msgstr ""

#: ../../library/difflib.rst:225

msgid ""

"Compare *a* and *b* (lists of strings); return a :class:`Differ`\\ -style "

"delta (a :term:`generator` generating the delta lines)."

msgstr ""

#: ../../library/difflib.rst:228

msgid ""

"Optional keyword parameters *linejunk* and *charjunk* are filtering "

"functions (or ``None``):"

msgstr ""

#: ../../library/difflib.rst:231

msgid ""

"*linejunk*: A function that accepts a single string argument, and returns "

"true if the string is junk, or false if not. The default is ``None``. There "

"is also a module-level function :func:`IS_LINE_JUNK`, which filters out "

"lines without visible characters, except for at most one hash character "

"(``'#'``) -- however the underlying :class:`SequenceMatcher` class does a "

"dynamic analysis of which lines are so frequent as to constitute noise, and "

"this usually works better than using this function."

msgstr ""

#: ../../library/difflib.rst:239

msgid ""

"*charjunk*: A function that accepts a character (a string of length 1), and "

"returns if the character is junk, or false if not. The default is module-"

"level function :func:`IS_CHARACTER_JUNK`, which filters out whitespace "

"characters (a blank or tab; it's a bad idea to include newline in this!)."

msgstr ""

#: ../../library/difflib.rst:260

msgid "Return one of the two sequences that generated a delta."

msgstr ""

#: ../../library/difflib.rst:262

msgid ""

"Given a *sequence* produced by :meth:`Differ.compare` or :func:`ndiff`, "

"extract lines originating from file 1 or 2 (parameter *which*), stripping "

"off line prefixes."

msgstr ""

#: ../../library/difflib.rst:266

msgid "Example:"

msgstr "範例："

#: ../../library/difflib.rst:283

msgid ""

"Compare *a* and *b* (lists of strings); return a delta (a :term:`generator` "

"generating the delta lines) in unified diff format."

msgstr ""

#: ../../library/difflib.rst:286

msgid ""

"Unified diffs are a compact way of showing just the lines that have changed "

"plus a few lines of context. The changes are shown in an inline style "

"(instead of separate before/after blocks). The number of context lines is "

"set by *n* which defaults to three."

msgstr ""

#: ../../library/difflib.rst:291

msgid ""

"By default, the diff control lines (those with ``---``, ``+++``, or ``@@``) "

"are created with a trailing newline. This is helpful so that inputs created "

"from :func:`io.IOBase.readlines` result in diffs that are suitable for use "

"with :func:`io.IOBase.writelines` since both the inputs and outputs have "

"trailing newlines."

msgstr ""

#: ../../library/difflib.rst:300

msgid ""

"The unified diff format normally has a header for filenames and modification "

"times. Any or all of these may be specified using strings for *fromfile*, "

"*tofile*, *fromfiledate*, and *tofiledate*. The modification times are "

"normally expressed in the ISO 8601 format. If not specified, the strings "

"default to blanks."

msgstr ""

#: ../../library/difflib.rst:324

msgid ""

"Compare *a* and *b* (lists of bytes objects) using *dfunc*; yield a sequence "

"of delta lines (also bytes) in the format returned by *dfunc*. *dfunc* must "

"be a callable, typically either :func:`unified_diff` or :func:`context_diff`."

msgstr ""

#: ../../library/difflib.rst:329

msgid ""

"Allows you to compare data with unknown or inconsistent encoding. All inputs "

"except *n* must be bytes objects, not str. Works by losslessly converting "

"all inputs (except *n*) to str, and calling ``dfunc(a, b, fromfile, tofile, "

"fromfiledate, tofiledate, n, lineterm)``. The output of *dfunc* is then "

"converted back to bytes, so the delta lines that you receive have the same "

"unknown/inconsistent encodings as *a* and *b*."

msgstr ""

#: ../../library/difflib.rst:340

msgid ""

"Return ``True`` for ignorable lines. The line *line* is ignorable if *line* "

"is blank or contains a single ``'#'``, otherwise it is not ignorable. Used "

"as a default for parameter *linejunk* in :func:`ndiff` in older versions."

msgstr ""

#: ../../library/difflib.rst:347

msgid ""

"Return ``True`` for ignorable characters. The character *ch* is ignorable "

"if *ch* is a space or tab, otherwise it is not ignorable. Used as a default "

"for parameter *charjunk* in :func:`ndiff`."

msgstr ""

#: ../../library/difflib.rst:354

msgid ""

"`Pattern Matching: The Gestalt Approach <https://jacobfilipp.com/DrDobbs/"

"articles/DDJ/1988/8807/8807c/8807c.htm>`_"

msgstr ""

#: ../../library/difflib.rst:355

msgid ""

"Discussion of a similar algorithm by John W. Ratcliff and D. E. Metzener. "

"This was published in Dr. Dobb's Journal in July, 1988."

msgstr ""

#: ../../library/difflib.rst:362

msgid "SequenceMatcher objects"

msgstr "SequenceMatcher 物件"

#: ../../library/difflib.rst:364

msgid "The :class:`SequenceMatcher` class has this constructor:"

msgstr ""

#: ../../library/difflib.rst:369

msgid ""

"Optional argument *isjunk* must be ``None`` (the default) or a one-argument "

"function that takes a sequence element and returns true if and only if the "

"element is \"junk\" and should be ignored. Passing ``None`` for *isjunk* is "

"equivalent to passing ``lambda x: False``; in other words, no elements are "

"ignored. For example, pass::"

msgstr ""

#: ../../library/difflib.rst:375

msgid "lambda x: x in \" \\t\""

msgstr "lambda x: x in \" \\t\""

#: ../../library/difflib.rst:377

msgid ""

"if you're comparing lines as sequences of characters, and don't want to "

"synch up on blanks or hard tabs."

msgstr ""

#: ../../library/difflib.rst:380

msgid ""

"The optional arguments *a* and *b* are sequences to be compared; both "

"default to empty strings. The elements of both sequences must be :term:"

"`hashable`."

msgstr ""

#: ../../library/difflib.rst:383

msgid ""

"The optional argument *autojunk* can be used to disable the automatic junk "

"heuristic."

msgstr ""

#: ../../library/difflib.rst:389

msgid ""

"SequenceMatcher objects get three data attributes: *bjunk* is the set of "

"elements of *b* for which *isjunk* is ``True``; *bpopular* is the set of non-"

"junk elements considered popular by the heuristic (if it is not disabled); "

"*b2j* is a dict mapping the remaining elements of *b* to a list of positions "

"where they occur. All three are reset whenever *b* is reset with :meth:"

"`set_seqs` or :meth:`set_seq2`."

msgstr ""

#: ../../library/difflib.rst:396

msgid "The *bjunk* and *bpopular* attributes."

msgstr ""

#: ../../library/difflib.rst:399

msgid ":class:`SequenceMatcher` objects have the following methods:"

msgstr ":class:`SequenceMatcher` 物件有以下方法："

#: ../../library/difflib.rst:403

msgid "Set the two sequences to be compared."

msgstr ""

#: ../../library/difflib.rst:405

msgid ""

":class:`SequenceMatcher` computes and caches detailed information about the "

"second sequence, so if you want to compare one sequence against many "

"sequences, use :meth:`set_seq2` to set the commonly used sequence once and "

"call :meth:`set_seq1` repeatedly, once for each of the other sequences."

msgstr ""

#: ../../library/difflib.rst:413

msgid ""

"Set the first sequence to be compared. The second sequence to be compared "

"is not changed."

msgstr ""

#: ../../library/difflib.rst:419

msgid ""

"Set the second sequence to be compared. The first sequence to be compared "

"is not changed."

msgstr ""

#: ../../library/difflib.rst:425

msgid "Find longest matching block in ``a[alo:ahi]`` and ``b[blo:bhi]``."

msgstr ""

#: ../../library/difflib.rst:427

msgid ""

"If *isjunk* was omitted or ``None``, :meth:`find_longest_match` returns "

"``(i, j, k)`` such that ``a[i:i+k]`` is equal to ``b[j:j+k]``, where ``alo "

"<= i <= i+k <= ahi`` and ``blo <= j <= j+k <= bhi``. For all ``(i', j', "

"k')`` meeting those conditions, the additional conditions ``k >= k'``, ``i "

"<= i'``, and if ``i == i'``, ``j <= j'`` are also met. In other words, of "

"all maximal matching blocks, return one that starts earliest in *a*, and of "

"all those maximal matching blocks that start earliest in *a*, return the one "

"that starts earliest in *b*."

msgstr ""

#: ../../library/difflib.rst:440

msgid ""

"If *isjunk* was provided, first the longest matching block is determined as "

"above, but with the additional restriction that no junk element appears in "

"the block. Then that block is extended as far as possible by matching "

"(only) junk elements on both sides. So the resulting block never matches on "

"junk except as identical junk happens to be adjacent to an interesting match."

msgstr ""

#: ../../library/difflib.rst:447

msgid ""

"Here's the same example as before, but considering blanks to be junk. That "

"prevents ``' abcd'`` from matching the ``' abcd'`` at the tail end of the "

"second sequence directly. Instead only the ``'abcd'`` can match, and "

"matches the leftmost ``'abcd'`` in the second sequence:"

msgstr ""

#: ../../library/difflib.rst:456

msgid "If no blocks match, this returns ``(alo, blo, 0)``."

msgstr ""

#: ../../library/difflib.rst:458

msgid "This method returns a :term:`named tuple` ``Match(a, b, size)``."

msgstr ""

#: ../../library/difflib.rst:460

msgid "Added default arguments."

msgstr "新增預設引數。"

#: ../../library/difflib.rst:466

msgid ""

"Return list of triples describing non-overlapping matching subsequences. "

"Each triple is of the form ``(i, j, n)``, and means that ``a[i:i+n] == b[j:"

"j+n]``. The triples are monotonically increasing in *i* and *j*."

msgstr ""

#: ../../library/difflib.rst:471

msgid ""

"The last triple is a dummy, and has the value ``(len(a), len(b), 0)``. It "

"is the only triple with ``n == 0``. If ``(i, j, n)`` and ``(i', j', n')`` "

"are adjacent triples in the list, and the second is not the last triple in "

"the list, then ``i+n < i'`` or ``j+n < j'``; in other words, adjacent "

"triples always describe non-adjacent equal blocks."

msgstr ""

#: ../../library/difflib.rst:479

msgid ""

">>> s = SequenceMatcher(None, \"abxcd\", \"abcd\")\n"

">>> s.get_matching_blocks()\n"

"[Match(a=0, b=0, size=2), Match(a=3, b=2, size=2), Match(a=5, b=4, size=0)]"

msgstr ""

">>> s = SequenceMatcher(None, \"abxcd\", \"abcd\")\n"

">>> s.get_matching_blocks()\n"

"[Match(a=0, b=0, size=2), Match(a=3, b=2, size=2), Match(a=5, b=4, size=0)]"

#: ../../library/difflib.rst:488

msgid ""

"Return list of 5-tuples describing how to turn *a* into *b*. Each tuple is "

"of the form ``(tag, i1, i2, j1, j2)``. The first tuple has ``i1 == j1 == "

"0``, and remaining tuples have *i1* equal to the *i2* from the preceding "

"tuple, and, likewise, *j1* equal to the previous *j2*."

msgstr ""

#: ../../library/difflib.rst:493

msgid "The *tag* values are strings, with these meanings:"

msgstr ""

#: ../../library/difflib.rst:496

msgid "Value"

msgstr ""

#: ../../library/difflib.rst:498

msgid "``'replace'``"

msgstr "``'replace'``"

#: ../../library/difflib.rst:498

msgid "``a[i1:i2]`` should be replaced by ``b[j1:j2]``."

msgstr "``a[i1:i2]`` 應該被替換為 ``b[j1:j2]``。"

#: ../../library/difflib.rst:501

msgid "``'delete'``"

msgstr "``'delete'``"

#: ../../library/difflib.rst:501

msgid "``a[i1:i2]`` should be deleted. Note that ``j1 == j2`` in this case."

msgstr "``a[i1:i2]`` 應該被刪除。請注意，在這種情況下 ``j1 == j2``。"

#: ../../library/difflib.rst:504

msgid "``'insert'``"

msgstr "``'insert'``"

#: ../../library/difflib.rst:504

msgid ""

"``b[j1:j2]`` should be inserted at ``a[i1:i1]``. Note that ``i1 == i2`` in "

"this case."

msgstr ""

#: ../../library/difflib.rst:508

msgid "``'equal'``"

msgstr "``'equal'``"

#: ../../library/difflib.rst:508

msgid "``a[i1:i2] == b[j1:j2]`` (the sub-sequences are equal)."

msgstr ""

#: ../../library/difflib.rst:512

msgid "For example::"

msgstr "舉例來說： ::"

#: ../../library/difflib.rst:514

msgid ""

">>> a = \"qabxcd\"\n"

">>> b = \"abycdf\"\n"

">>> s = SequenceMatcher(None, a, b)\n"

">>> for tag, i1, i2, j1, j2 in s.get_opcodes():\n"

"... print('{:7} a[{}:{}] --> b[{}:{}] {!r:>8} --> {!r}'.format(\n"

"... tag, i1, i2, j1, j2, a[i1:i2], b[j1:j2]))\n"

"delete a[0:1] --> b[0:0] 'q' --> ''\n"

"equal a[1:3] --> b[0:2] 'ab' --> 'ab'\n"

"replace a[3:4] --> b[2:3] 'x' --> 'y'\n"

"equal a[4:6] --> b[3:5] 'cd' --> 'cd'\n"

"insert a[6:6] --> b[5:6] '' --> 'f'"

msgstr ""

">>> a = \"qabxcd\"\n"

">>> b = \"abycdf\"\n"

">>> s = SequenceMatcher(None, a, b)\n"

">>> for tag, i1, i2, j1, j2 in s.get_opcodes():\n"

"... print('{:7} a[{}:{}] --> b[{}:{}] {!r:>8} --> {!r}'.format(\n"

"... tag, i1, i2, j1, j2, a[i1:i2], b[j1:j2]))\n"

"delete a[0:1] --> b[0:0] 'q' --> ''\n"

"equal a[1:3] --> b[0:2] 'ab' --> 'ab'\n"

"replace a[3:4] --> b[2:3] 'x' --> 'y'\n"

"equal a[4:6] --> b[3:5] 'cd' --> 'cd'\n"

"insert a[6:6] --> b[5:6] '' --> 'f'"

#: ../../library/difflib.rst:529

msgid "Return a :term:`generator` of groups with up to *n* lines of context."

msgstr ""

#: ../../library/difflib.rst:531

msgid ""

"Starting with the groups returned by :meth:`get_opcodes`, this method splits "

"out smaller change clusters and eliminates intervening ranges which have no "

"changes."

msgstr ""

#: ../../library/difflib.rst:535

msgid "The groups are returned in the same format as :meth:`get_opcodes`."

msgstr ""

#: ../../library/difflib.rst:540

msgid ""

"Return a measure of the sequences' similarity as a float in the range [0, 1]."

msgstr ""

#: ../../library/difflib.rst:543

msgid ""

"Where T is the total number of elements in both sequences, and M is the "

"number of matches, this is 2.0\\*M / T. Note that this is ``1.0`` if the "

"sequences are identical, and ``0.0`` if they have nothing in common."

msgstr ""

#: ../../library/difflib.rst:547

msgid ""

"This is expensive to compute if :meth:`get_matching_blocks` or :meth:"

"`get_opcodes` hasn't already been called, in which case you may want to try :"

"meth:`quick_ratio` or :meth:`real_quick_ratio` first to get an upper bound."

msgstr ""

#: ../../library/difflib.rst:554

msgid ""

"Caution: The result of a :meth:`ratio` call may depend on the order of the "

"arguments. For instance::"

msgstr ""

#: ../../library/difflib.rst:557

msgid ""

">>> SequenceMatcher(None, 'tide', 'diet').ratio()\n"

"0.25\n"

">>> SequenceMatcher(None, 'diet', 'tide').ratio()\n"

"0.5"

msgstr ""

">>> SequenceMatcher(None, 'tide', 'diet').ratio()\n"

"0.25\n"

">>> SequenceMatcher(None, 'diet', 'tide').ratio()\n"

"0.5"

#: ../../library/difflib.rst:565

msgid "Return an upper bound on :meth:`ratio` relatively quickly."

msgstr ""

#: ../../library/difflib.rst:570

msgid "Return an upper bound on :meth:`ratio` very quickly."

msgstr ""

#: ../../library/difflib.rst:573

msgid ""

"The three methods that return the ratio of matching to total characters can "

"give different results due to differing levels of approximation, although :"

"meth:`~SequenceMatcher.quick_ratio` and :meth:`~SequenceMatcher."

"real_quick_ratio` are always at least as large as :meth:`~SequenceMatcher."

"ratio`:"

msgstr ""

#: ../../library/difflib.rst:590

msgid "SequenceMatcher examples"

msgstr "SequenceMatcher 範例"

#: ../../library/difflib.rst:592

msgid "This example compares two strings, considering blanks to be \"junk\":"

msgstr ""

#: ../../library/difflib.rst:598

msgid ""

":meth:`~SequenceMatcher.ratio` returns a float in [0, 1], measuring the "

"similarity of the sequences. As a rule of thumb, a :meth:`~SequenceMatcher."

"ratio` value over 0.6 means the sequences are close matches:"

msgstr ""

#: ../../library/difflib.rst:605

msgid ""

"If you're only interested in where the sequences match, :meth:"

"`~SequenceMatcher.get_matching_blocks` is handy:"

msgstr ""

#: ../../library/difflib.rst:614

msgid ""

"Note that the last tuple returned by :meth:`~SequenceMatcher."

"get_matching_blocks` is always a dummy, ``(len(a), len(b), 0)``, and this is "

"the only case in which the last tuple element (number of elements matched) "

"is ``0``."

msgstr ""

#: ../../library/difflib.rst:618

msgid ""

"If you want to know how to change the first sequence into the second, use :"

"meth:`~SequenceMatcher.get_opcodes`:"

msgstr ""

#: ../../library/difflib.rst:629

msgid ""

"The :func:`get_close_matches` function in this module which shows how simple "

"code building on :class:`SequenceMatcher` can be used to do useful work."

msgstr ""

#: ../../library/difflib.rst:633

msgid ""

"`Simple version control recipe <https://code.activestate.com/recipes/576729-"

"simple-version-control/>`_ for a small application built with :class:"

"`SequenceMatcher`."

msgstr ""

#: ../../library/difflib.rst:641

msgid "Differ objects"

msgstr ""

#: ../../library/difflib.rst:643

msgid ""

"Note that :class:`Differ`\\ -generated deltas make no claim to be "

"**minimal** diffs. To the contrary, minimal diffs are often counter-"

"intuitive, because they synch up anywhere possible, sometimes accidental "

"matches 100 pages apart. Restricting synch points to contiguous matches "

"preserves some notion of locality, at the occasional cost of producing a "

"longer diff."

msgstr ""

#: ../../library/difflib.rst:649

msgid "The :class:`Differ` class has this constructor:"

msgstr ":class:`Differ` 類別有這個建構函式："

#: ../../library/difflib.rst:655

msgid ""

"Optional keyword parameters *linejunk* and *charjunk* are for filter "

"functions (or ``None``):"

msgstr ""

#: ../../library/difflib.rst:658

msgid ""

"*linejunk*: A function that accepts a single string argument, and returns "

"true if the string is junk. The default is ``None``, meaning that no line "

"is considered junk."

msgstr ""

#: ../../library/difflib.rst:662

msgid ""

"*charjunk*: A function that accepts a single character argument (a string of "

"length 1), and returns true if the character is junk. The default is "

"``None``, meaning that no character is considered junk."

msgstr ""

#: ../../library/difflib.rst:666

msgid ""

"These junk-filtering functions speed up matching to find differences and do "

"not cause any differing lines or characters to be ignored. Read the "

"description of the :meth:`~SequenceMatcher.find_longest_match` method's "

"*isjunk* parameter for an explanation."

msgstr ""

#: ../../library/difflib.rst:672

msgid ""

":class:`Differ` objects are used (deltas generated) via a single method:"

msgstr ""

#: ../../library/difflib.rst:677

msgid ""

"Compare two sequences of lines, and generate the delta (a sequence of lines)."

msgstr ""

#: ../../library/difflib.rst:679

msgid ""

"Each sequence must contain individual single-line strings ending with "

"newlines. Such sequences can be obtained from the :meth:`~io.IOBase."

"readlines` method of file-like objects. The delta generated also consists "

"of newline-terminated strings, ready to be printed as-is via the :meth:`~io."

"IOBase.writelines` method of a file-like object."

msgstr ""

#: ../../library/difflib.rst:690

msgid "Differ example"

msgstr "Differ 範例"

#: ../../library/difflib.rst:692

msgid ""

"This example compares two texts. First we set up the texts, sequences of "

"individual single-line strings ending with newlines (such sequences can also "

"be obtained from the :meth:`~io.IOBase.readlines` method of file-like "

"objects):"

msgstr ""

#: ../../library/difflib.rst:711

msgid "Next we instantiate a Differ object:"

msgstr ""

#: ../../library/difflib.rst:715

msgid ""

"Note that when instantiating a :class:`Differ` object we may pass functions "

"to filter out line and character \"junk.\" See the :meth:`Differ` "

"constructor for details."

msgstr ""

#: ../../library/difflib.rst:719

msgid "Finally, we compare the two:"

msgstr ""

#: ../../library/difflib.rst:723

msgid "``result`` is a list of strings, so let's pretty-print it:"

msgstr ""

#: ../../library/difflib.rst:738

msgid "As a single multi-line string it looks like this:"

msgstr ""

#: ../../library/difflib.rst:757

msgid "A command-line interface to difflib"

msgstr "difflib 的命令列介面"

#: ../../library/difflib.rst:759

msgid ""

"This example shows how to use difflib to create a ``diff``-like utility."

msgstr ""

#: ../../library/difflib.rst:761

msgid ""

"\"\"\" Command-line interface to difflib.py providing diffs in four "

"formats:\n"

"\n"

"* ndiff: lists every line and highlights interline changes.\n"

"* context: highlights clusters of changes in a before/after format.\n"

"* unified: highlights clusters of changes in an inline format.\n"

"* html: generates side by side comparison with change highlights.\n"

"\n"

"\"\"\"\n"

"\n"

"import sys, os, difflib, argparse\n"

"import datetime as dt\n"

"\n"

"def file_mtime(path):\n"

" t = dt.datetime.fromtimestamp(os.stat(path).st_mtime,\n"

" dt.timezone.utc)\n"

" return t.astimezone().isoformat()\n"

"\n"

"def main():\n"

"\n"

" parser = argparse.ArgumentParser()\n"

" parser.add_argument('-c', action='store_true', default=False,\n"

" help='Produce a context format diff (default)')\n"

" parser.add_argument('-u', action='store_true', default=False,\n"

" help='Produce a unified format diff')\n"

" parser.add_argument('-m', action='store_true', default=False,\n"

" help='Produce HTML side by side diff '\n"

" '(can use -c and -l in conjunction)')\n"

" parser.add_argument('-n', action='store_true', default=False,\n"

" help='Produce a ndiff format diff')\n"

" parser.add_argument('-l', '--lines', type=int, default=3,\n"

" help='Set number of context lines (default 3)')\n"

" parser.add_argument('fromfile')\n"

" parser.add_argument('tofile')\n"

" options = parser.parse_args()\n"

"\n"

" n = options.lines\n"

" fromfile = options.fromfile\n"

" tofile = options.tofile\n"

"\n"

" fromdate = file_mtime(fromfile)\n"

" todate = file_mtime(tofile)\n"

" with open(fromfile) as ff:\n"

" fromlines = ff.readlines()\n"

" with open(tofile) as tf:\n"

" tolines = tf.readlines()\n"

"\n"

" if options.u:\n"

" diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, "

"fromdate, todate, n=n)\n"

" elif options.n:\n"

" diff = difflib.ndiff(fromlines, tolines)\n"

" elif options.m:\n"

" diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,"

"tofile,context=options.c,numlines=n)\n"

" else:\n"

" diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, "

"fromdate, todate, n=n)\n"

"\n"

" sys.stdout.writelines(diff)\n"

"\n"

"if __name__ == '__main__':\n"

" main()\n"

msgstr ""

"\"\"\" Command-line interface to difflib.py providing diffs in four "

"formats:\n"

"\n"

"* ndiff: lists every line and highlights interline changes.\n"

"* context: highlights clusters of changes in a before/after format.\n"

"* unified: highlights clusters of changes in an inline format.\n"

"* html: generates side by side comparison with change highlights.\n"

"\n"

"\"\"\"\n"

"\n"

"import sys, os, difflib, argparse\n"

"import datetime as dt\n"

"\n"

"def file_mtime(path):\n"

" t = dt.datetime.fromtimestamp(os.stat(path).st_mtime,\n"

" dt.timezone.utc)\n"

" return t.astimezone().isoformat()\n"

"\n"

"def main():\n"

"\n"

" parser = argparse.ArgumentParser()\n"

" parser.add_argument('-c', action='store_true', default=False,\n"

" help='Produce a context format diff (default)')\n"

" parser.add_argument('-u', action='store_true', default=False,\n"

" help='Produce a unified format diff')\n"

" parser.add_argument('-m', action='store_true', default=False,\n"

" help='Produce HTML side by side diff '\n"

" '(can use -c and -l in conjunction)')\n"

" parser.add_argument('-n', action='store_true', default=False,\n"

" help='Produce a ndiff format diff')\n"

" parser.add_argument('-l', '--lines', type=int, default=3,\n"

" help='Set number of context lines (default 3)')\n"

" parser.add_argument('fromfile')\n"

" parser.add_argument('tofile')\n"

" options = parser.parse_args()\n"

"\n"

" n = options.lines\n"

" fromfile = options.fromfile\n"

" tofile = options.tofile\n"

"\n"

" fromdate = file_mtime(fromfile)\n"

" todate = file_mtime(tofile)\n"

" with open(fromfile) as ff:\n"

" fromlines = ff.readlines()\n"

" with open(tofile) as tf:\n"

" tolines = tf.readlines()\n"

"\n"

" if options.u:\n"

" diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, "

"fromdate, todate, n=n)\n"

" elif options.n:\n"

" diff = difflib.ndiff(fromlines, tolines)\n"

" elif options.m:\n"

" diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,"

"tofile,context=options.c,numlines=n)\n"

" else:\n"

" diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, "

"fromdate, todate, n=n)\n"

"\n"