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1731 lines (1463 loc) · 57.3 KB
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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001-2017, Python Software Foundation
# This file is distributed under the same license as the Python package.
# FIRST AUTHOR <EMAIL@ADDRESS>, 2017.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: Python 3.6\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2018-05-26 11:10+0900\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=utf-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Generated-By: Babel 2.5.1\n"
#: ../Doc/library/argparse.rst:2
msgid ""
":mod:`argparse` --- Parser for command-line options, arguments and sub-"
"commands"
msgstr ""
#: ../Doc/library/argparse.rst:12
msgid "**Source code:** :source:`Lib/argparse.py`"
msgstr ""
#: ../Doc/library/argparse.rst:18
msgid ""
"This page contains the API reference information. For a more gentle "
"introduction to Python command-line parsing, have a look at the "
":ref:`argparse tutorial <argparse-tutorial>`."
msgstr ""
#: ../Doc/library/argparse.rst:22
msgid ""
"The :mod:`argparse` module makes it easy to write user-friendly command-"
"line interfaces. The program defines what arguments it requires, and "
":mod:`argparse` will figure out how to parse those out of "
":data:`sys.argv`. The :mod:`argparse` module also automatically "
"generates help and usage messages and issues errors when users give the "
"program invalid arguments."
msgstr ""
#: ../Doc/library/argparse.rst:30
msgid "Example"
msgstr ""
#: ../Doc/library/argparse.rst:32
msgid ""
"The following code is a Python program that takes a list of integers and "
"produces either the sum or the max::"
msgstr ""
#: ../Doc/library/argparse.rst:47
msgid ""
"Assuming the Python code above is saved into a file called ``prog.py``, "
"it can be run at the command line and provides useful help messages:"
msgstr ""
#: ../Doc/library/argparse.rst:64
msgid ""
"When run with the appropriate arguments, it prints either the sum or the "
"max of the command-line integers:"
msgstr ""
#: ../Doc/library/argparse.rst:75
msgid "If invalid arguments are passed in, it will issue an error:"
msgstr ""
#: ../Doc/library/argparse.rst:83
msgid "The following sections walk you through this example."
msgstr ""
#: ../Doc/library/argparse.rst:87
msgid "Creating a parser"
msgstr ""
#: ../Doc/library/argparse.rst:89
msgid ""
"The first step in using the :mod:`argparse` is creating an "
":class:`ArgumentParser` object::"
msgstr ""
#: ../Doc/library/argparse.rst:94
msgid ""
"The :class:`ArgumentParser` object will hold all the information "
"necessary to parse the command line into Python data types."
msgstr ""
#: ../Doc/library/argparse.rst:99
msgid "Adding arguments"
msgstr ""
#: ../Doc/library/argparse.rst:101
msgid ""
"Filling an :class:`ArgumentParser` with information about program "
"arguments is done by making calls to the "
":meth:`~ArgumentParser.add_argument` method. Generally, these calls tell "
"the :class:`ArgumentParser` how to take the strings on the command line "
"and turn them into objects. This information is stored and used when "
":meth:`~ArgumentParser.parse_args` is called. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:113
msgid ""
"Later, calling :meth:`~ArgumentParser.parse_args` will return an object "
"with two attributes, ``integers`` and ``accumulate``. The ``integers`` "
"attribute will be a list of one or more ints, and the ``accumulate`` "
"attribute will be either the :func:`sum` function, if ``--sum`` was "
"specified at the command line, or the :func:`max` function if it was not."
msgstr ""
#: ../Doc/library/argparse.rst:121
msgid "Parsing arguments"
msgstr ""
#: ../Doc/library/argparse.rst:123
msgid ""
":class:`ArgumentParser` parses arguments through the "
":meth:`~ArgumentParser.parse_args` method. This will inspect the command"
" line, convert each argument to the appropriate type and then invoke the "
"appropriate action. In most cases, this means a simple :class:`Namespace`"
" object will be built up from attributes parsed out of the command line::"
msgstr ""
#: ../Doc/library/argparse.rst:132
msgid ""
"In a script, :meth:`~ArgumentParser.parse_args` will typically be called "
"with no arguments, and the :class:`ArgumentParser` will automatically "
"determine the command-line arguments from :data:`sys.argv`."
msgstr ""
#: ../Doc/library/argparse.rst:138
msgid "ArgumentParser objects"
msgstr ""
#: ../Doc/library/argparse.rst:147
msgid ""
"Create a new :class:`ArgumentParser` object. All parameters should be "
"passed as keyword arguments. Each parameter has its own more detailed "
"description below, but in short they are:"
msgstr ""
#: ../Doc/library/argparse.rst:151
msgid "prog_ - The name of the program (default: ``sys.argv[0]``)"
msgstr ""
#: ../Doc/library/argparse.rst:153
msgid ""
"usage_ - The string describing the program usage (default: generated from"
" arguments added to parser)"
msgstr ""
#: ../Doc/library/argparse.rst:156
msgid "description_ - Text to display before the argument help (default: none)"
msgstr ""
#: ../Doc/library/argparse.rst:158
msgid "epilog_ - Text to display after the argument help (default: none)"
msgstr ""
#: ../Doc/library/argparse.rst:160
msgid ""
"parents_ - A list of :class:`ArgumentParser` objects whose arguments "
"should also be included"
msgstr ""
#: ../Doc/library/argparse.rst:163
msgid "formatter_class_ - A class for customizing the help output"
msgstr ""
#: ../Doc/library/argparse.rst:165
msgid ""
"prefix_chars_ - The set of characters that prefix optional arguments "
"(default: '-')"
msgstr ""
#: ../Doc/library/argparse.rst:168
msgid ""
"fromfile_prefix_chars_ - The set of characters that prefix files from "
"which additional arguments should be read (default: ``None``)"
msgstr ""
#: ../Doc/library/argparse.rst:171
msgid ""
"argument_default_ - The global default value for arguments (default: "
"``None``)"
msgstr ""
#: ../Doc/library/argparse.rst:174
msgid ""
"conflict_handler_ - The strategy for resolving conflicting optionals "
"(usually unnecessary)"
msgstr ""
#: ../Doc/library/argparse.rst:177
msgid "add_help_ - Add a ``-h/--help`` option to the parser (default: ``True``)"
msgstr ""
#: ../Doc/library/argparse.rst:179
msgid ""
"allow_abbrev_ - Allows long options to be abbreviated if the abbreviation"
" is unambiguous. (default: ``True``)"
msgstr ""
#: ../Doc/library/argparse.rst:182
msgid "*allow_abbrev* parameter was added."
msgstr ""
#: ../Doc/library/argparse.rst:185 ../Doc/library/argparse.rst:683
msgid "The following sections describe how each of these are used."
msgstr ""
#: ../Doc/library/argparse.rst:189
msgid "prog"
msgstr ""
#: ../Doc/library/argparse.rst:191
msgid ""
"By default, :class:`ArgumentParser` objects use ``sys.argv[0]`` to "
"determine how to display the name of the program in help messages. This "
"default is almost always desirable because it will make the help messages"
" match how the program was invoked on the command line. For example, "
"consider a file named ``myprogram.py`` with the following code::"
msgstr ""
#: ../Doc/library/argparse.rst:202
msgid ""
"The help for this program will display ``myprogram.py`` as the program "
"name (regardless of where the program was invoked from):"
msgstr ""
#: ../Doc/library/argparse.rst:221
msgid ""
"To change this default behavior, another value can be supplied using the "
"``prog=`` argument to :class:`ArgumentParser`::"
msgstr ""
#: ../Doc/library/argparse.rst:231
#, python-format
msgid ""
"Note that the program name, whether determined from ``sys.argv[0]`` or "
"from the ``prog=`` argument, is available to help messages using the "
"``%(prog)s`` format specifier."
msgstr ""
#: ../Doc/library/argparse.rst:248
msgid "usage"
msgstr ""
#: ../Doc/library/argparse.rst:250
msgid ""
"By default, :class:`ArgumentParser` calculates the usage message from the"
" arguments it contains::"
msgstr ""
#: ../Doc/library/argparse.rst:266
msgid ""
"The default message can be overridden with the ``usage=`` keyword "
"argument::"
msgstr ""
#: ../Doc/library/argparse.rst:281
#, python-format
msgid ""
"The ``%(prog)s`` format specifier is available to fill in the program "
"name in your usage messages."
msgstr ""
#: ../Doc/library/argparse.rst:286
msgid "description"
msgstr ""
#: ../Doc/library/argparse.rst:288
msgid ""
"Most calls to the :class:`ArgumentParser` constructor will use the "
"``description=`` keyword argument. This argument gives a brief "
"description of what the program does and how it works. In help messages,"
" the description is displayed between the command-line usage string and "
"the help messages for the various arguments::"
msgstr ""
#: ../Doc/library/argparse.rst:303
msgid ""
"By default, the description will be line-wrapped so that it fits within "
"the given space. To change this behavior, see the formatter_class_ "
"argument."
msgstr ""
#: ../Doc/library/argparse.rst:308
msgid "epilog"
msgstr ""
#: ../Doc/library/argparse.rst:310
msgid ""
"Some programs like to display additional description of the program after"
" the description of the arguments. Such text can be specified using the "
"``epilog=`` argument to :class:`ArgumentParser`::"
msgstr ""
#: ../Doc/library/argparse.rst:327
msgid ""
"As with the description_ argument, the ``epilog=`` text is by default "
"line-wrapped, but this behavior can be adjusted with the formatter_class_"
" argument to :class:`ArgumentParser`."
msgstr ""
#: ../Doc/library/argparse.rst:333
msgid "parents"
msgstr ""
#: ../Doc/library/argparse.rst:335
msgid ""
"Sometimes, several parsers share a common set of arguments. Rather than "
"repeating the definitions of these arguments, a single parser with all "
"the shared arguments and passed to ``parents=`` argument to "
":class:`ArgumentParser` can be used. The ``parents=`` argument takes a "
"list of :class:`ArgumentParser` objects, collects all the positional and "
"optional actions from them, and adds these actions to the "
":class:`ArgumentParser` object being constructed::"
msgstr ""
#: ../Doc/library/argparse.rst:355
msgid ""
"Note that most parent parsers will specify ``add_help=False``. "
"Otherwise, the :class:`ArgumentParser` will see two ``-h/--help`` options"
" (one in the parent and one in the child) and raise an error."
msgstr ""
#: ../Doc/library/argparse.rst:360
msgid ""
"You must fully initialize the parsers before passing them via "
"``parents=``. If you change the parent parsers after the child parser, "
"those changes will not be reflected in the child."
msgstr ""
#: ../Doc/library/argparse.rst:366
msgid "formatter_class"
msgstr ""
#: ../Doc/library/argparse.rst:368
msgid ""
":class:`ArgumentParser` objects allow the help formatting to be "
"customized by specifying an alternate formatting class. Currently, there"
" are four such classes:"
msgstr ""
#: ../Doc/library/argparse.rst:377
msgid ""
":class:`RawDescriptionHelpFormatter` and :class:`RawTextHelpFormatter` "
"give more control over how textual descriptions are displayed. By "
"default, :class:`ArgumentParser` objects line-wrap the description_ and "
"epilog_ texts in command-line help messages::"
msgstr ""
#: ../Doc/library/argparse.rst:402
msgid ""
"Passing :class:`RawDescriptionHelpFormatter` as ``formatter_class=`` "
"indicates that description_ and epilog_ are already correctly formatted "
"and should not be line-wrapped::"
msgstr ""
#: ../Doc/library/argparse.rst:428
msgid ""
":class:`RawTextHelpFormatter` maintains whitespace for all sorts of help "
"text, including argument descriptions. However, multiple new lines are "
"replaced with one. If you wish to preserve multiple blank lines, add "
"spaces between the newlines."
msgstr ""
#: ../Doc/library/argparse.rst:433
msgid ""
":class:`ArgumentDefaultsHelpFormatter` automatically adds information "
"about default values to each of the argument help messages::"
msgstr ""
#: ../Doc/library/argparse.rst:451
msgid ""
":class:`MetavarTypeHelpFormatter` uses the name of the type_ argument for"
" each argument as the display name for its values (rather than using the "
"dest_ as the regular formatter does)::"
msgstr ""
#: ../Doc/library/argparse.rst:472
msgid "prefix_chars"
msgstr ""
#: ../Doc/library/argparse.rst:474
msgid ""
"Most command-line options will use ``-`` as the prefix, e.g. "
"``-f/--foo``. Parsers that need to support different or additional prefix"
" characters, e.g. for options like ``+f`` or ``/foo``, may specify them "
"using the ``prefix_chars=`` argument to the ArgumentParser constructor::"
msgstr ""
#: ../Doc/library/argparse.rst:486
msgid ""
"The ``prefix_chars=`` argument defaults to ``'-'``. Supplying a set of "
"characters that does not include ``-`` will cause ``-f/--foo`` options to"
" be disallowed."
msgstr ""
#: ../Doc/library/argparse.rst:492
msgid "fromfile_prefix_chars"
msgstr ""
#: ../Doc/library/argparse.rst:494
msgid ""
"Sometimes, for example when dealing with a particularly long argument "
"lists, it may make sense to keep the list of arguments in a file rather "
"than typing it out at the command line. If the "
"``fromfile_prefix_chars=`` argument is given to the "
":class:`ArgumentParser` constructor, then arguments that start with any "
"of the specified characters will be treated as files, and will be "
"replaced by the arguments they contain. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:508
msgid ""
"Arguments read from a file must by default be one per line (but see also "
":meth:`~ArgumentParser.convert_arg_line_to_args`) and are treated as if "
"they were in the same place as the original file referencing argument on "
"the command line. So in the example above, the expression ``['-f', "
"'foo', '@args.txt']`` is considered equivalent to the expression ``['-f',"
" 'foo', '-f', 'bar']``."
msgstr ""
#: ../Doc/library/argparse.rst:514
msgid ""
"The ``fromfile_prefix_chars=`` argument defaults to ``None``, meaning "
"that arguments will never be treated as file references."
msgstr ""
#: ../Doc/library/argparse.rst:519
msgid "argument_default"
msgstr ""
#: ../Doc/library/argparse.rst:521
msgid ""
"Generally, argument defaults are specified either by passing a default to"
" :meth:`~ArgumentParser.add_argument` or by calling the "
":meth:`~ArgumentParser.set_defaults` methods with a specific set of name-"
"value pairs. Sometimes however, it may be useful to specify a single "
"parser-wide default for arguments. This can be accomplished by passing "
"the ``argument_default=`` keyword argument to :class:`ArgumentParser`. "
"For example, to globally suppress attribute creation on "
":meth:`~ArgumentParser.parse_args` calls, we supply "
"``argument_default=SUPPRESS``::"
msgstr ""
#: ../Doc/library/argparse.rst:541
msgid "allow_abbrev"
msgstr ""
#: ../Doc/library/argparse.rst:543
msgid ""
"Normally, when you pass an argument list to the "
":meth:`~ArgumentParser.parse_args` method of an :class:`ArgumentParser`, "
"it :ref:`recognizes abbreviations <prefix-matching>` of long options."
msgstr ""
#: ../Doc/library/argparse.rst:547
msgid "This feature can be disabled by setting ``allow_abbrev`` to ``False``::"
msgstr ""
#: ../Doc/library/argparse.rst:560
msgid "conflict_handler"
msgstr ""
#: ../Doc/library/argparse.rst:562
msgid ""
":class:`ArgumentParser` objects do not allow two actions with the same "
"option string. By default, :class:`ArgumentParser` objects raise an "
"exception if an attempt is made to create an argument with an option "
"string that is already in use::"
msgstr ""
#: ../Doc/library/argparse.rst:574
msgid ""
"Sometimes (e.g. when using parents_) it may be useful to simply override "
"any older arguments with the same option string. To get this behavior, "
"the value ``'resolve'`` can be supplied to the ``conflict_handler=`` "
"argument of :class:`ArgumentParser`::"
msgstr ""
#: ../Doc/library/argparse.rst:590
msgid ""
"Note that :class:`ArgumentParser` objects only remove an action if all of"
" its option strings are overridden. So, in the example above, the old "
"``-f/--foo`` action is retained as the ``-f`` action, because only the "
"``--foo`` option string was overridden."
msgstr ""
#: ../Doc/library/argparse.rst:597
msgid "add_help"
msgstr ""
#: ../Doc/library/argparse.rst:599
msgid ""
"By default, ArgumentParser objects add an option which simply displays "
"the parser's help message. For example, consider a file named "
"``myprogram.py`` containing the following code::"
msgstr ""
#: ../Doc/library/argparse.rst:608
msgid ""
"If ``-h`` or ``--help`` is supplied at the command line, the "
"ArgumentParser help will be printed:"
msgstr ""
#: ../Doc/library/argparse.rst:620
msgid ""
"Occasionally, it may be useful to disable the addition of this help "
"option. This can be achieved by passing ``False`` as the ``add_help=`` "
"argument to :class:`ArgumentParser`::"
msgstr ""
#: ../Doc/library/argparse.rst:632
msgid ""
"The help option is typically ``-h/--help``. The exception to this is if "
"the ``prefix_chars=`` is specified and does not include ``-``, in which "
"case ``-h`` and ``--help`` are not valid options. In this case, the "
"first character in ``prefix_chars`` is used to prefix the help options::"
msgstr ""
#: ../Doc/library/argparse.rst:647
msgid "The add_argument() method"
msgstr ""
#: ../Doc/library/argparse.rst:653
msgid ""
"Define how a single command-line argument should be parsed. Each "
"parameter has its own more detailed description below, but in short they "
"are:"
msgstr ""
#: ../Doc/library/argparse.rst:656
msgid ""
"`name or flags`_ - Either a name or a list of option strings, e.g. "
"``foo`` or ``-f, --foo``."
msgstr ""
#: ../Doc/library/argparse.rst:659
msgid ""
"action_ - The basic type of action to be taken when this argument is "
"encountered at the command line."
msgstr ""
#: ../Doc/library/argparse.rst:662
msgid "nargs_ - The number of command-line arguments that should be consumed."
msgstr ""
#: ../Doc/library/argparse.rst:664
msgid "const_ - A constant value required by some action_ and nargs_ selections."
msgstr ""
#: ../Doc/library/argparse.rst:666
msgid ""
"default_ - The value produced if the argument is absent from the command "
"line."
msgstr ""
#: ../Doc/library/argparse.rst:669
msgid "type_ - The type to which the command-line argument should be converted."
msgstr ""
#: ../Doc/library/argparse.rst:671
msgid "choices_ - A container of the allowable values for the argument."
msgstr ""
#: ../Doc/library/argparse.rst:673
msgid ""
"required_ - Whether or not the command-line option may be omitted "
"(optionals only)."
msgstr ""
#: ../Doc/library/argparse.rst:676
msgid "help_ - A brief description of what the argument does."
msgstr ""
#: ../Doc/library/argparse.rst:678
msgid "metavar_ - A name for the argument in usage messages."
msgstr ""
#: ../Doc/library/argparse.rst:680
msgid ""
"dest_ - The name of the attribute to be added to the object returned by "
":meth:`parse_args`."
msgstr ""
#: ../Doc/library/argparse.rst:687
msgid "name or flags"
msgstr ""
#: ../Doc/library/argparse.rst:689
msgid ""
"The :meth:`~ArgumentParser.add_argument` method must know whether an "
"optional argument, like ``-f`` or ``--foo``, or a positional argument, "
"like a list of filenames, is expected. The first arguments passed to "
":meth:`~ArgumentParser.add_argument` must therefore be either a series of"
" flags, or a simple argument name. For example, an optional argument "
"could be created like::"
msgstr ""
#: ../Doc/library/argparse.rst:698
msgid "while a positional argument could be created like::"
msgstr ""
#: ../Doc/library/argparse.rst:702
msgid ""
"When :meth:`~ArgumentParser.parse_args` is called, optional arguments "
"will be identified by the ``-`` prefix, and the remaining arguments will "
"be assumed to be positional::"
msgstr ""
#: ../Doc/library/argparse.rst:719
msgid "action"
msgstr ""
#: ../Doc/library/argparse.rst:721
msgid ""
":class:`ArgumentParser` objects associate command-line arguments with "
"actions. These actions can do just about anything with the command-line "
"arguments associated with them, though most actions simply add an "
"attribute to the object returned by :meth:`~ArgumentParser.parse_args`. "
"The ``action`` keyword argument specifies how the command-line arguments "
"should be handled. The supplied actions are:"
msgstr ""
#: ../Doc/library/argparse.rst:727
msgid ""
"``'store'`` - This just stores the argument's value. This is the default"
" action. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:735
msgid ""
"``'store_const'`` - This stores the value specified by the const_ keyword"
" argument. The ``'store_const'`` action is most commonly used with "
"optional arguments that specify some sort of flag. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:744
msgid ""
"``'store_true'`` and ``'store_false'`` - These are special cases of "
"``'store_const'`` used for storing the values ``True`` and ``False`` "
"respectively. In addition, they create default values of ``False`` and "
"``True`` respectively. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:756
msgid ""
"``'append'`` - This stores a list, and appends each argument value to the"
" list. This is useful to allow an option to be specified multiple times."
" Example usage::"
msgstr ""
#: ../Doc/library/argparse.rst:765
msgid ""
"``'append_const'`` - This stores a list, and appends the value specified "
"by the const_ keyword argument to the list. (Note that the const_ "
"keyword argument defaults to ``None``.) The ``'append_const'`` action is"
" typically useful when multiple arguments need to store constants to the "
"same list. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:777
msgid ""
"``'count'`` - This counts the number of times a keyword argument occurs. "
"For example, this is useful for increasing verbosity levels::"
msgstr ""
#: ../Doc/library/argparse.rst:785
msgid ""
"``'help'`` - This prints a complete help message for all the options in "
"the current parser and then exits. By default a help action is "
"automatically added to the parser. See :class:`ArgumentParser` for "
"details of how the output is created."
msgstr ""
#: ../Doc/library/argparse.rst:790
msgid ""
"``'version'`` - This expects a ``version=`` keyword argument in the "
":meth:`~ArgumentParser.add_argument` call, and prints version information"
" and exits when invoked::"
msgstr ""
#: ../Doc/library/argparse.rst:800
msgid ""
"You may also specify an arbitrary action by passing an Action subclass or"
" other object that implements the same interface. The recommended way to"
" do this is to extend :class:`Action`, overriding the ``__call__`` method"
" and optionally the ``__init__`` method."
msgstr ""
#: ../Doc/library/argparse.rst:805
msgid "An example of a custom action::"
msgstr ""
#: ../Doc/library/argparse.rst:825
msgid "For more details, see :class:`Action`."
msgstr ""
#: ../Doc/library/argparse.rst:828
msgid "nargs"
msgstr ""
#: ../Doc/library/argparse.rst:830
msgid ""
"ArgumentParser objects usually associate a single command-line argument "
"with a single action to be taken. The ``nargs`` keyword argument "
"associates a different number of command-line arguments with a single "
"action. The supported values are:"
msgstr ""
#: ../Doc/library/argparse.rst:835
msgid ""
"``N`` (an integer). ``N`` arguments from the command line will be "
"gathered together into a list. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:844
msgid ""
"Note that ``nargs=1`` produces a list of one item. This is different "
"from the default, in which the item is produced by itself."
msgstr ""
#: ../Doc/library/argparse.rst:847
msgid ""
"``'?'``. One argument will be consumed from the command line if possible,"
" and produced as a single item. If no command-line argument is present, "
"the value from default_ will be produced. Note that for optional "
"arguments, there is an additional case - the option string is present but"
" not followed by a command-line argument. In this case the value from "
"const_ will be produced. Some examples to illustrate this::"
msgstr ""
#: ../Doc/library/argparse.rst:864
msgid ""
"One of the more common uses of ``nargs='?'`` is to allow optional input "
"and output files::"
msgstr ""
#: ../Doc/library/argparse.rst:879
msgid ""
"``'*'``. All command-line arguments present are gathered into a list. "
"Note that it generally doesn't make much sense to have more than one "
"positional argument with ``nargs='*'``, but multiple optional arguments "
"with ``nargs='*'`` is possible. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:891
msgid ""
"``'+'``. Just like ``'*'``, all command-line args present are gathered "
"into a list. Additionally, an error message will be generated if there "
"wasn't at least one command-line argument present. For example::"
msgstr ""
#: ../Doc/library/argparse.rst:905
msgid ""
"``argparse.REMAINDER``. All the remaining command-line arguments are "
"gathered into a list. This is commonly useful for command line utilities"
" that dispatch to other command line utilities::"
msgstr ""
#: ../Doc/library/argparse.rst:916
msgid ""
"If the ``nargs`` keyword argument is not provided, the number of "
"arguments consumed is determined by the action_. Generally this means a "
"single command-line argument will be consumed and a single item (not a "
"list) will be produced."
msgstr ""
#: ../Doc/library/argparse.rst:922
msgid "const"
msgstr ""
#: ../Doc/library/argparse.rst:924
msgid ""
"The ``const`` argument of :meth:`~ArgumentParser.add_argument` is used to"
" hold constant values that are not read from the command line but are "
"required for the various :class:`ArgumentParser` actions. The two most "
"common uses of it are:"
msgstr ""
#: ../Doc/library/argparse.rst:928
msgid ""
"When :meth:`~ArgumentParser.add_argument` is called with "
"``action='store_const'`` or ``action='append_const'``. These actions add"
" the ``const`` value to one of the attributes of the object returned by "
":meth:`~ArgumentParser.parse_args`. See the action_ description for "
"examples."
msgstr ""
#: ../Doc/library/argparse.rst:933
msgid ""
"When :meth:`~ArgumentParser.add_argument` is called with option strings "
"(like ``-f`` or ``--foo``) and ``nargs='?'``. This creates an optional "
"argument that can be followed by zero or one command-line arguments. When"
" parsing the command line, if the option string is encountered with no "
"command-line argument following it, the value of ``const`` will be "
"assumed instead. See the nargs_ description for examples."
msgstr ""
#: ../Doc/library/argparse.rst:940
msgid ""
"With the ``'store_const'`` and ``'append_const'`` actions, the ``const`` "
"keyword argument must be given. For other actions, it defaults to "
"``None``."
msgstr ""
#: ../Doc/library/argparse.rst:945
msgid "default"
msgstr ""
#: ../Doc/library/argparse.rst:947
msgid ""
"All optional arguments and some positional arguments may be omitted at "
"the command line. The ``default`` keyword argument of "
":meth:`~ArgumentParser.add_argument`, whose value defaults to ``None``, "
"specifies what value should be used if the command-line argument is not "
"present. For optional arguments, the ``default`` value is used when the "
"option string was not present at the command line::"
msgstr ""
#: ../Doc/library/argparse.rst:961
msgid ""
"If the ``default`` value is a string, the parser parses the value as if "
"it were a command-line argument. In particular, the parser applies any "
"type_ conversion argument, if provided, before setting the attribute on "
"the :class:`Namespace` return value. Otherwise, the parser uses the "
"value as is::"
msgstr ""
#: ../Doc/library/argparse.rst:972
msgid ""
"For positional arguments with nargs_ equal to ``?`` or ``*``, the "
"``default`` value is used when no command-line argument was present::"
msgstr ""
#: ../Doc/library/argparse.rst:983
msgid ""
"Providing ``default=argparse.SUPPRESS`` causes no attribute to be added "
"if the command-line argument was not present::"
msgstr ""
#: ../Doc/library/argparse.rst:995
msgid "type"
msgstr ""
#: ../Doc/library/argparse.rst:997
msgid ""
"By default, :class:`ArgumentParser` objects read command-line arguments "
"in as simple strings. However, quite often the command-line string should"
" instead be interpreted as another type, like a :class:`float` or "
":class:`int`. The ``type`` keyword argument of "
":meth:`~ArgumentParser.add_argument` allows any necessary type-checking "
"and type conversions to be performed. Common built-in types and "
"functions can be used directly as the value of the ``type`` argument::"
msgstr ""
#: ../Doc/library/argparse.rst:1010
msgid ""
"See the section on the default_ keyword argument for information on when "
"the ``type`` argument is applied to default arguments."
msgstr ""
#: ../Doc/library/argparse.rst:1013
msgid ""
"To ease the use of various types of files, the argparse module provides "
"the factory FileType which takes the ``mode=``, ``bufsize=``, "
"``encoding=`` and ``errors=`` arguments of the :func:`open` function. "
"For example, ``FileType('w')`` can be used to create a writable file::"
msgstr ""
#: ../Doc/library/argparse.rst:1023
msgid ""
"``type=`` can take any callable that takes a single string argument and "
"returns the converted value::"
msgstr ""
#: ../Doc/library/argparse.rst:1042
msgid ""
"The choices_ keyword argument may be more convenient for type checkers "
"that simply check against a range of values::"
msgstr ""
#: ../Doc/library/argparse.rst:1053
msgid "See the choices_ section for more details."
msgstr ""
#: ../Doc/library/argparse.rst:1057
msgid "choices"
msgstr ""
#: ../Doc/library/argparse.rst:1059
msgid ""
"Some command-line arguments should be selected from a restricted set of "
"values. These can be handled by passing a container object as the "
"*choices* keyword argument to :meth:`~ArgumentParser.add_argument`. When"
" the command line is parsed, argument values will be checked, and an "
"error message will be displayed if the argument was not one of the "
"acceptable values::"
msgstr ""
#: ../Doc/library/argparse.rst:1074
msgid ""
"Note that inclusion in the *choices* container is checked after any type_"
" conversions have been performed, so the type of the objects in the "
"*choices* container should match the type_ specified::"
msgstr ""
#: ../Doc/library/argparse.rst:1086
msgid ""
"Any object that supports the ``in`` operator can be passed as the "
"*choices* value, so :class:`dict` objects, :class:`set` objects, custom "
"containers, etc. are all supported."
msgstr ""
#: ../Doc/library/argparse.rst:1092
msgid "required"
msgstr ""
#: ../Doc/library/argparse.rst:1094
msgid ""
"In general, the :mod:`argparse` module assumes that flags like ``-f`` and"
" ``--bar`` indicate *optional* arguments, which can always be omitted at "
"the command line. To make an option *required*, ``True`` can be specified"
" for the ``required=`` keyword argument to "
":meth:`~ArgumentParser.add_argument`::"
msgstr ""
#: ../Doc/library/argparse.rst:1107
msgid ""
"As the example shows, if an option is marked as ``required``, "
":meth:`~ArgumentParser.parse_args` will report an error if that option is"
" not present at the command line."
msgstr ""
#: ../Doc/library/argparse.rst:1113
msgid ""
"Required options are generally considered bad form because users expect "
"*options* to be *optional*, and thus they should be avoided when "
"possible."
msgstr ""
#: ../Doc/library/argparse.rst:1118
msgid "help"
msgstr ""
#: ../Doc/library/argparse.rst:1120
msgid ""
"The ``help`` value is a string containing a brief description of the "
"argument. When a user requests help (usually by using ``-h`` or "
"``--help`` at the command line), these ``help`` descriptions will be "
"displayed with each argument::"
msgstr ""
#: ../Doc/library/argparse.rst:1140
#, python-format
msgid ""
"The ``help`` strings can include various format specifiers to avoid "
"repetition of things like the program name or the argument default_. The"
" available specifiers include the program name, ``%(prog)s`` and most "
"keyword arguments to :meth:`~ArgumentParser.add_argument`, e.g. "
"``%(default)s``, ``%(type)s``, etc.::"
msgstr ""
#: ../Doc/library/argparse.rst:1157
#, python-format
msgid ""
"As the help string supports %-formatting, if you want a literal ``%`` to "
"appear in the help string, you must escape it as ``%%``."
msgstr ""
#: ../Doc/library/argparse.rst:1160
msgid ""
":mod:`argparse` supports silencing the help entry for certain options, by"
" setting the ``help`` value to ``argparse.SUPPRESS``::"
msgstr ""
#: ../Doc/library/argparse.rst:1173
msgid "metavar"
msgstr ""
#: ../Doc/library/argparse.rst:1175
msgid ""
"When :class:`ArgumentParser` generates help messages, it needs some way "
"to refer to each expected argument. By default, ArgumentParser objects "
"use the dest_ value as the \"name\" of each object. By default, for "
"positional argument actions, the dest_ value is used directly, and for "
"optional argument actions, the dest_ value is uppercased. So, a single "
"positional argument with ``dest='bar'`` will be referred to as ``bar``. A"
" single optional argument ``--foo`` that should be followed by a single "
"command-line argument will be referred to as ``FOO``. An example::"
msgstr ""