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msgid ""
msgstr ""
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"Last-Translator: Swen Bachmann, 2026\n"
"Language-Team: German (https://app.transifex.com/python-doc/teams/5390/de/)\n"
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#: ../../library/difflib.rst:2
msgid ":mod:`!difflib` --- Helpers for computing deltas"
msgstr ""
#: ../../library/difflib.rst:11
msgid "**Source code:** :source:`Lib/difflib.py`"
msgstr ""
#: ../../library/difflib.rst:20
msgid ""
"This module provides classes and functions for comparing sequences. Most of "
"them compare sequences of text lines (for example lists of strings, or :term:"
"`file objects `) and produce :dfn:`diffs` -- reports on the "
"differences. Diffs can be produced in various formats, including HTML and "
"context and unified diffs -- formats produced by tools like :manpage:`diff "
"` and :manpage:`git diff `."
msgstr ""
#: ../../library/difflib.rst:28
msgid ""
"Comparisons are done using a matching algorithm implemented in :class:"
"`SequenceMatcher` -- a flexible class for comparing pairs of sequences of "
"any type, not just text, so long as the sequence elements are :term:"
"`hashable`."
msgstr ""
#: ../../library/difflib.rst:37
msgid "Junk heuristic"
msgstr ""
#: ../../library/difflib.rst:39
msgid ""
":mod:`!difflib` uses a :dfn:`junk` heuristic: some items are deemed to be :"
"dfn:`junk`, and ignored when searching for similarities. Ideally, these are "
"uninteresting or common items, such as blank lines or whitespace."
msgstr ""
#: ../../library/difflib.rst:44
msgid ""
"This heuristic can speed the algorithm up (because it reduces the number of "
"possible combinations) and it can produce results that are more "
"understandable for humans (typically breaking on whitespace). But it can "
"also cause pathological cases:"
msgstr ""
#: ../../library/difflib.rst:49
msgid ""
"Inappropriately chosen junk items can cause an unexpectedly **large** (but "
"still correct) result."
msgstr ""
#: ../../library/difflib.rst:51
msgid ""
"The default heuristic is **asymmetric**: only the second sequence is "
"inspected when determining what is considered junk, so comparing A to B can "
"give different results than comparing B to A and reversing the result."
msgstr ""
#: ../../library/difflib.rst:55
msgid ""
"By default, if the second input sequence is at least 200 items long, items "
"that account for more than 1% it are considered *junk*."
msgstr ""
#: ../../library/difflib.rst:58
msgid ""
"Depending on your data, you should consider turning this heuristic off "
"(setting :class:`~difflib.SequenceMatcher`'s *autojunk* argument to "
"``False``) or tuning it (using the *isjunk* argument, perhaps to one of the :"
"ref:`predefined functions `)."
msgstr ""
#: ../../library/difflib.rst:65
msgid "The :mod:`!difflib` algorithm"
msgstr ""
#: ../../library/difflib.rst:67
msgid ""
"The algorithm used in :class:`SequenceMatcher` predates, and is a little "
"fancier than, an algorithm published in the late 1980s by Ratcliff and "
"Obershelp under the hyperbolic name \"gestalt pattern matching.\" The idea "
"is to find the longest contiguous subsequence common to both inputs, then "
"recursively handle the pieces of the sequences to the left and to the right "
"of the matching subsequence."
msgstr ""
#: ../../library/difflib.rst:76
msgid ""
"`Pattern Matching: The Gestalt Approach `_"
msgstr ""
#: ../../library/difflib.rst:77
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:80
msgid ""
"As an extension to the Ratcliff and Obershelp algorithm, :mod:`!difflib` "
"searches for the longest *junk-free* contiguous subsequence. See the :ref:"
"`difflib-junk` section for details."
msgstr ""
#: ../../library/difflib.rst:84
msgid "Timing"
msgstr ""
#: ../../library/difflib.rst:86
msgid ""
"The basic Ratcliff-Obershelp algorithm is cubic time in the worst case and "
"quadratic time in the expected case. :mod:`difflib`'s algorithm 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:97
msgid "Diff generation"
msgstr ""
#: ../../library/difflib.rst:103
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:108
msgid "Each line of a :class:`Differ` delta begins with a two-letter code:"
msgstr ""
#: ../../library/difflib.rst:111
msgid "Code"
msgstr ""
#: ../../library/difflib.rst:111 ../../library/difflib.rst:580
msgid "Meaning"
msgstr "Bedeutung"
#: ../../library/difflib.rst:113
msgid "``'- '``"
msgstr ""
#: ../../library/difflib.rst:113
msgid "line unique to sequence 1"
msgstr ""
#: ../../library/difflib.rst:115
msgid "``'+ '``"
msgstr ""
#: ../../library/difflib.rst:115
msgid "line unique to sequence 2"
msgstr ""
#: ../../library/difflib.rst:117
msgid "``' '``"
msgstr ""
#: ../../library/difflib.rst:117
msgid "line common to both sequences"
msgstr ""
#: ../../library/difflib.rst:119
msgid "``'? '``"
msgstr ""
#: ../../library/difflib.rst:119
msgid "line not present in either input sequence"
msgstr ""
#: ../../library/difflib.rst:122
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:126
msgid ""
"Note that :class:`Differ`\\ -generated deltas make no claim to be "
"**minimal** diffs. To the contrary, minimal diffs are often counter-"
"intuitive for humans, because they synch up anywhere possible, sometimes at "
"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:133
msgid "The :class:`Differ` class has this constructor:"
msgstr ""
#: ../../library/difflib.rst:137
msgid ""
"Optional keyword parameters *linejunk* and *charjunk* are for filter "
"functions (or ``None``):"
msgstr ""
#: ../../library/difflib.rst:140
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:144
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:148
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:154
msgid ""
":class:`Differ` objects are used (deltas generated) via a single method:"
msgstr ""
#: ../../library/difflib.rst:159
msgid ""
"Compare two sequences of lines, and generate the delta (a sequence of lines)."
msgstr ""
#: ../../library/difflib.rst:161
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 generated delta 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:170
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:177
msgid ""
"The trailing newlines get stripped before the diff, so the result can be "
"incomplete. See :gh:`71896` for details."
msgstr ""
#: ../../library/difflib.rst:180
msgid "The constructor for this class is:"
msgstr ""
#: ../../library/difflib.rst:185
msgid "Initializes instance of :class:`HtmlDiff`."
msgstr ""
#: ../../library/difflib.rst:187
msgid ""
"*tabsize* is an optional keyword argument to specify tab stop spacing and "
"defaults to ``8``."
msgstr ""
#: ../../library/difflib.rst:190
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:193
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:197
msgid "The following methods are public:"
msgstr ""
#: ../../library/difflib.rst:202
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:206
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:209
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:220
msgid ""
"*fromdesc* and *todesc* are interpreted as unescaped HTML and should be "
"properly escaped while receiving input from untrusted sources."
msgstr ""
#: ../../library/difflib.rst:223
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:229
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:233
msgid ""
"The arguments for this method are the same as those for the :meth:"
"`make_file` method."
msgstr ""
#: ../../library/difflib.rst:240
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:243
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:247
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:253 ../../library/difflib.rst:385
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:256
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:282 ../../library/difflib.rst:408
msgid "See :ref:`difflib-interface` for a more detailed example."
msgstr ""
#: ../../library/difflib.rst:287
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:291
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:294
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:297
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:313
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:316
msgid ""
"Optional keyword parameters *linejunk* and *charjunk* are filtering "
"functions (or ``None``):"
msgstr ""
#: ../../library/difflib.rst:319
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:327
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:348
msgid "Return one of the two sequences that generated a delta."
msgstr ""
#: ../../library/difflib.rst:350
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:354
msgid "Example:"
msgstr "Beispiel:"
#: ../../library/difflib.rst:371
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:374
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:379
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:388
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:412
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:417
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:430
msgid "Junk definition functions"
msgstr ""
#: ../../library/difflib.rst:434
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:441
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:449
msgid "SequenceMatcher objects"
msgstr ""
#: ../../library/difflib.rst:453
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:459
msgid "lambda x: x in \" \\t\""
msgstr ""
#: ../../library/difflib.rst:461
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:464
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:467
msgid ""
"The optional argument *autojunk* can be used to disable the automatic junk "
"heuristic."
msgstr ""
#: ../../library/difflib.rst:470
msgid "Added the *autojunk* parameter."
msgstr ""
#: ../../library/difflib.rst:473
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:480
msgid "The *bjunk* and *bpopular* attributes."
msgstr ""
#: ../../library/difflib.rst:483
msgid ":class:`SequenceMatcher` objects have the following methods:"
msgstr ""
#: ../../library/difflib.rst:487
msgid "Set the two sequences to be compared."
msgstr ""
#: ../../library/difflib.rst:489
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:497
msgid ""
"Set the first sequence to be compared. The second sequence to be compared "
"is not changed."
msgstr ""
#: ../../library/difflib.rst:503
msgid ""
"Set the second sequence to be compared. The first sequence to be compared "
"is not changed."
msgstr ""
#: ../../library/difflib.rst:509
msgid "Find longest matching block in ``a[alo:ahi]`` and ``b[blo:bhi]``."
msgstr ""
#: ../../library/difflib.rst:511
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 "
" 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 ""
#: ../../library/difflib.rst:613
msgid "Return a :term:`generator` of groups with up to *n* lines of context."
msgstr ""
#: ../../library/difflib.rst:615
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:619
msgid "The groups are returned in the same format as :meth:`get_opcodes`."
msgstr ""
#: ../../library/difflib.rst:624
msgid ""
"Return a measure of the sequences' similarity as a float in the range [0, 1]."
msgstr ""
#: ../../library/difflib.rst:627
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:631
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:639
msgid "Return an upper bound on :meth:`ratio` relatively quickly."
msgstr ""
#: ../../library/difflib.rst:644
msgid "Return an upper bound on :meth:`ratio` very quickly."
msgstr ""
#: ../../library/difflib.rst:647
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:662
msgid "Examples"
msgstr "Beispiele"
#: ../../library/difflib.rst:667
msgid "SequenceMatcher examples"
msgstr ""
#: ../../library/difflib.rst:669
msgid "This example compares two strings, considering blanks to be \"junk\":"
msgstr ""
#: ../../library/difflib.rst:675
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:682
msgid ""
"If you're only interested in where the sequences match, :meth:"
"`~SequenceMatcher.get_matching_blocks` is handy:"
msgstr ""
#: ../../library/difflib.rst:691
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:695
msgid ""
"If you want to know how to change the first sequence into the second, use :"
"meth:`~SequenceMatcher.get_opcodes`:"
msgstr ""
#: ../../library/difflib.rst:706
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:710
msgid ""
"`Simple version control recipe `_ for a small application built with :class:"
"`SequenceMatcher`."
msgstr ""
#: ../../library/difflib.rst:718
msgid "Differ example"
msgstr "Differ-Beispiel"
#: ../../library/difflib.rst:720
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:739
msgid "Next we instantiate a Differ object:"
msgstr ""
#: ../../library/difflib.rst:743
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:747
msgid "Finally, we compare the two:"
msgstr ""
#: ../../library/difflib.rst:751
msgid "``result`` is a list of strings, so let's pretty-print it:"
msgstr ""
#: ../../library/difflib.rst:766
msgid "As a single multi-line string it looks like this:"
msgstr ""
#: ../../library/difflib.rst:785
msgid "A command-line interface to difflib"
msgstr ""
#: ../../library/difflib.rst:787
msgid ""
"This example shows how to use difflib to create a ``diff``-like utility."
msgstr ""
#: ../../library/difflib.rst:789
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 ""
#: ../../library/difflib.rst:792
msgid "ndiff example"
msgstr ""
#: ../../library/difflib.rst:794
msgid "This example shows how to use :func:`difflib.ndiff`."
msgstr ""
#: ../../library/difflib.rst:796
msgid ""
"\"\"\"ndiff [-q] file1 file2\n"
" or\n"
"ndiff (-r1 | -r2) < ndiff_output > file1_or_file2\n"
"\n"
"Print a human-friendly file difference report to stdout. Both inter-\n"
"and intra-line differences are noted. In the second form, recreate file1\n"
"(-r1) or file2 (-r2) on stdout, from an ndiff report on stdin.\n"
"\n"
"In the first form, if -q (\"quiet\") is not specified, the first two lines\n"
"of output are\n"
"\n"
"-: file1\n"
"+: file2\n"
"\n"
"Each remaining line begins with a two-letter code:\n"
"\n"
" \"- \" line unique to file1\n"
" \"+ \" line unique to file2\n"
" \" \" line common to both files\n"
" \"? \" line not present in either input file\n"
"\n"
"Lines beginning with \"? \" attempt to guide the eye to intraline\n"
"differences, and were not present in either input file. These lines can be\n"
"confusing if the source files contain tab characters.\n"
"\n"
"The first file can be recovered by retaining only lines that begin with\n"
"\" \" or \"- \", and deleting those 2-character prefixes; use ndiff with -"
"r1.\n"
"\n"
"The second file can be recovered similarly, but by retaining only \" \" "
"and\n"
"\"+ \" lines; use ndiff with -r2; or, on Unix, the second file can be\n"
"recovered by piping the output through\n"
"\n"
" sed -n '/^[+ ] /s/^..//p'\n"
"\"\"\"\n"
"\n"
"__version__ = 1, 7, 0\n"
"\n"
"import difflib, sys\n"
"\n"
"def fail(msg):\n"
" out = sys.stderr.write\n"
" out(msg + \"\\n\\n\")\n"
" out(__doc__)\n"
" return 0\n"
"\n"
"# open a file & return the file object; gripe and return 0 if it\n"
"# couldn't be opened\n"
"def fopen(fname):\n"
" try:\n"
" return open(fname)\n"
" except IOError as detail:\n"
" return fail(\"couldn't open \" + fname + \": \" + str(detail))\n"
"\n"
"# open two files & spray the diff to stdout; return false iff a problem\n"
"def fcompare(f1name, f2name):\n"
" f1 = fopen(f1name)\n"
" f2 = fopen(f2name)\n"
" if not f1 or not f2:\n"
" return 0\n"
"\n"
" a = f1.readlines(); f1.close()\n"
" b = f2.readlines(); f2.close()\n"
" for line in difflib.ndiff(a, b):\n"
" print(line, end=' ')\n"
"\n"
" return 1\n"
"\n"
"# crack args (sys.argv[1:] is normal) & compare;\n"
"# return false iff a problem\n"
"\n"
"def main(args):\n"
" import getopt\n"
" try:\n"
" opts, args = getopt.getopt(args, \"qr:\")\n"
" except getopt.error as detail:\n"
" return fail(str(detail))\n"
" noisy = 1\n"
" qseen = rseen = 0\n"
" for opt, val in opts:\n"
" if opt == \"-q\":\n"
" qseen = 1\n"
" noisy = 0\n"
" elif opt == \"-r\":\n"
" rseen = 1\n"
" whichfile = val\n"
" if qseen and rseen:\n"
" return fail(\"can't specify both -q and -r\")\n"
" if rseen:\n"
" if args:\n"
" return fail(\"no args allowed with -r option\")\n"
" if whichfile in (\"1\", \"2\"):\n"
" restore(whichfile)\n"
" return 1\n"
" return fail(\"-r value must be 1 or 2\")\n"
" if len(args) != 2:\n"
" return fail(\"need 2 filename args\")\n"
" f1name, f2name = args\n"
" if noisy:\n"
" print('-:', f1name)\n"
" print('+:', f2name)\n"
" return fcompare(f1name, f2name)\n"
"\n"
"# read ndiff output from stdin, and print file1 (which=='1') or\n"
"# file2 (which=='2') to stdout\n"
"\n"
"def restore(which):\n"
" restored = difflib.restore(sys.stdin.readlines(), which)\n"
" sys.stdout.writelines(restored)\n"
"\n"
"if __name__ == '__main__':\n"
" main(sys.argv[1:])\n"
msgstr ""