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* bpo-44864: Do not translate user-provided strings in ↵Jérémie Detrey2024-09-241-2/+2
| | | | | | ArgumentParser.add_subparsers() (GH-27667) Call _() on literal strings only.
* gh-113008: Correct argparse usage output for required, mutually exclusive ↵Payton2024-09-241-2/+2
| | | | groups (GH-113085)
* gh-59317: Improve parsing optional positional arguments in argparse (GH-124303)Serhiy Storchaka2024-09-241-6/+7
| | | | Fix parsing positional argument with nargs equal to '?' or '*' if it is preceded by an option and another positional argument.
* gh-72795: Make positional arguments with nargs='*' or REMAINDER non-required ↵Serhiy Storchaka2024-09-241-3/+2
| | | | | | | (GH-124306) This allows to use positional argument with nargs='*' and without default in mutually exclusive group and improves error message about required arguments.
* gh-53780: Ignore the first "--" (double dash) between an option and command ↵Serhiy Storchaka2024-09-241-4/+8
| | | | in argparse (GH-124275)
* gh-63143: Fix parsing mutually exclusive arguments in argparse (GH-124307)Serhiy Storchaka2024-09-241-3/+2
| | | | | | Arguments with the value identical to the default value (e.g. booleans, small integers, empty or 1-character strings) are no longer considered "not present".
* GH-87041: Fix incorrect indentation in argparse help (GH-124230)Savannah Ostrowski2024-09-231-4/+3
| | | | | | | | In case of usage a long command along with max_help_position more than the length of the command, the command's help was incorrectly started on the new line. Co-authored-by: Pavel Ditenbir <pavel.ditenbir@gmail.com>
* GH-124321: Fix argparse negative number parsing to capture -.5(GH-124322)Savannah Ostrowski2024-09-231-1/+1
| | | Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
* gh-81691: Fix handling of multiple "--" (double dashes) in argparse (GH-124233)Serhiy Storchaka2024-09-201-7/+5
| | | | | Only the first one has now been removed, all subsequent ones are now taken literally.
* GH-123945: Update regex for parsing negative numbers that contain ↵Savannah Ostrowski2024-09-171-1/+1
| | | | | | | | underscores (#123970) --------- Co-authored-by: Brandt Bucher <brandtbucher@gmail.com> Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
* gh-121151: argparse: Fix wrapping of long usage text of arguments inside a ↵Ali Hamdan2024-08-071-3/+12
| | | | mutually exclusive groups (GH-121159)
* gh-121018: Fix more cases of exiting in argparse when exit_on_error=False ↵Serhiy Storchaka2024-06-281-9/+13
| | | | | | | | | (GH-121056) * parse_intermixed_args() now raises ArgumentError instead of calling error() if exit_on_error is false. * Internal code now always raises ArgumentError instead of calling error(). It is then caught at the higher level and error() is called if exit_on_error is true.
* gh-121018: Ensure ArgumentParser.parse_args with exit_on_error=False raises ↵blhsing2024-06-261-2/+4
| | | | instead of exiting when given unrecognized arguments (GH-121019)
* gh-118805: Remove type, choices, metavar params of `BooleanOptionalAction` ↵Nikita Sobolev2024-05-091-28/+0
| | | | | (#118806) Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
* gh-62090: Simplify argparse usage formatting (GH-105039)Ali Hamdan2024-05-071-72/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rationale ========= argparse performs a complex formatting of the usage for argument grouping and for line wrapping to fit the terminal width. This formatting has been a constant source of bugs for at least 10 years (see linked issues below) where defensive assertion errors are triggered or brackets and paranthesis are not properly handeled. Problem ======= The current implementation of argparse usage formatting relies on regular expressions to group arguments usage only to separate them again later with another set of regular expressions. This is a complex and error prone approach that caused all the issues linked below. Special casing certain argument formats has not solved the problem. The following are some of the most common issues: - empty `metavar` - mutually exclusive groups with `SUPPRESS`ed arguments - metavars with whitespace - metavars with brackets or paranthesis Solution ======== The following two comments summarize the solution: - https://github.com/python/cpython/issues/82091#issuecomment-1093832187 - https://github.com/python/cpython/issues/77048#issuecomment-1093776995 Mainly, the solution is to rewrite the usage formatting to avoid the group-then-separate approach. Instead, the usage parts are kept separate and only joined together at the end. This allows for a much simpler implementation that is easier to understand and maintain. It avoids the regular expressions approach and fixes the corresponding issues. This closes the following GitHub issues: - #62090 - #62549 - #77048 - #82091 - #89743 - #96310 - #98666 These PRs become obsolete: - #15372 - #96311
* gh-116159: argparse: performance improvement parsing large number of options ↵Amethyst Reese2024-03-011-4/+5
| | | | | | | | | | | | | | (#116162) When parsing positional vs optional arguments, the use of min with a list comprehension inside of a loop results in quadratic time based on the number of optional arguments given. When combined with use of prefix based argument files and a large number of optional flags, this can result in extremely slow parsing behavior. This replaces the min call with a simple loop with a short circuit to break at the next optional argument. Co-authored-by: Zsolt Dollenstein <zsol.zsol@gmail.com>
* bpo-44865: Fix yet one missing translations in argparse (GH-27668)Jérémie Detrey2024-02-261-1/+2
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* gh-77956: Add the words 'default' and 'version' help text localizable ↵Emmanuel Arias2024-02-261-2/+4
| | | | | | | (GH-12711) Co-authored-by: paul.j3 Co-authored-by: Jérémie Detrey <jdetrey@users.noreply.github.com>
* gh-96310: Fix a traceback in argparse when all options in a mutually ↵Daniel Mach2024-02-211-0/+2
| | | | | | | | | | | exclusive group are suppressed (GH-96311) Reproducer depends on terminal size - the traceback occurs when there's an option long enough so the usage line doesn't fit the terminal width. Option order is also important for reproducibility. Excluding empty groups (with all options suppressed) from inserts fixes the problem.
* argparse: remove incoherent and redundant docstring for private method ↵Frank Dana2024-02-211-8/+0
| | | | | (GH-101591) Signed-off-by: FeRD (Frank Dana) <ferdnyc@gmail.com>
* gh-60346: Improve handling single-dash options in ↵Serhiy Storchaka2024-02-191-23/+28
| | | | ArgumentParser.parse_known_args() (GH-114180)
* gh-83648: Support deprecation of options, arguments and subcommands in ↵Serhiy Storchaka2024-02-051-24/+68
| | | | argparse (GH-114086)
* gh-109475: Fix support of explicit option value "--" in argparse (GH-114814)Serhiy Storchaka2024-02-051-1/+1
| | | For example "--option=--".
* gh-101599: argparse: simplify the option help string (GH-103372)Jokimax2024-02-021-7/+3
| | | | | | | | | | | If the option with argument has short and long names, output argument only once, after the long name: -o, --option ARG description instead of -o ARG, --option ARG description
* gh-109653: Defer importing `warnings` in several modules (#110286)Alex Waygood2023-10-041-2/+3
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* gh-103558: Add coverage tests for argparse (#103570)Tian Gao2023-06-051-6/+6
| | | | | Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com> Co-authored-by: hauntsaninja <hauntsaninja@gmail.com>
* gh-92248: Deprecate `type`, `choices`, `metavar` parameters of ↵Nikita Sobolev2023-05-191-3/+24
| | | | | | | | `argparse.BooleanOptionalAction` (#103678) Co-authored-by: Kirill <80244920+Eclips4@users.noreply.github.com> Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com> Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
* gh-104273: Remove redundant len() calls in argparse function (#104274)Burak Saler2023-05-071-3/+4
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* gh-101640: Make argparse _print_message catch any write error (#101802)Oleg Iarygin2023-05-061-3/+5
| | | | | | * In particular, don't exit when trying to print to stderr = None. * Add tests Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
* gh-101979: argparse: fix a bug where parentheses in metavar argument of ↵Yeojin Kim2023-03-051-3/+10
| | | | add_argument() were dropped (#102318)
* gh-80448: argparse: Fix IndexError on store_true action (#15656)Hai Shi2022-11-121-1/+5
| | | | | Co-authored-by: Rémi Lapeyre <remi.lapeyre@henki.fr> Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com> Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
* argparse: Remove unused name variable when handling ArgumentTypeError (#96549)Jonathon Reinhart2022-09-051-1/+0
| | | | | | | | This removes the unused `name` variable in the block where `ArgumentTypeError` is handled. `ArgumentTypeError` errors are handled by showing just the string of the exception; unlike `ValueError`, the name (`__name__`) of the function is not included in the error message. Fixes #96548
* gh-92445 Improve interaction between nargs="*" and choices() (GH-92565)Harry2022-08-251-1/+3
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* gh-85308: argparse: Use filesystem encoding for arguments file (GH-93277)Inada Naoki2022-06-231-1/+3
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* Allow translating argument error messages (#17169)DjMorgul2022-05-051-1/+1
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* gh-88753: Make BooleanOptionalAction's addition of default to help more ↵Toshio Kuratomi2022-05-031-5/+15
| | | | | | | | | | | | | | | | similar to other actions (#27808) Help for other actions omit the default value if default is SUPPRESS or already contains the special format string '%(default)'. Add those special cases to BooleanOptionalAction's help formatting too. Fixes https://bugs.python.org/issue44587 so that default=SUPPRESS is not emitted. Fixes https://bugs.python.org/issue38956 as this code will detect whether '%(default)s' has already been specified in the help string. Signed-off-by: Micky Yun Chan (michiboo): <chanmickyyun@gmail.com> Co-authored-by: Micky Yun Chan <michan@redhat.com>
* bpo-39716: Raise on conflicting subparser names. (GH-18605)Antony Lee2022-05-011-0/+7
| | | | | | | | | | | Raise an ArgumentError when the same subparser name is added twice to an ArgumentParser. This is consistent with the (default) behavior when the same option string is added twice to an ArgumentParser. (Support for `conflict_handler="resolve"` could be considered as a followup feature, although real use cases seem even rarer than "resolve"ing option-strings.) Automerge-Triggered-By: GH:rhettinger
* gh-91832: Add 'required' attr to argparse.Action repr (GH-91841)Abhigyan Bose2022-04-281-0/+1
| | | | | | | | | # Adding 'required' to names in Lib.argparse.Action gh-91832: Added 'required' to the list `names` in `Lib.argparse.Action`. Changed constant strings that test the Action object. Automerge-Triggered-By: GH:merwok
* Revert "gh-85567: Register a cleanup function to close files for FileType ↵Victor Stinner2022-04-211-7/+3
| | | | | objects in argparse (#32257)" (#91771) This reverts commit 328dbc051f84bd5fdf61101bb4fa61d85f8b7feb.
* gh-85567: Register a cleanup function to close files for FileType objects in ↵achhina2022-04-181-3/+7
| | | | | | | argparse (#32257) * bpo-41395: Register a cleanup function to close files for FileType objects in argparse * Added import as top level import, and renamed file as fh.
* bpo-14156: Make argparse.FileType work correctly for binary file modes when ↵MojoVampire2022-03-061-4/+4
| | | | | | | argument is '-' (GH-13165) Also made modes containing 'a' or 'x' act the same as a mode containing 'w' when argument is '-' (so 'a'/'x' return sys.stdout like 'w', and 'ab'/'xb' return sys.stdout.buffer like 'wb').
* bpo-46510: update Python2-style exception handling in argparse (GH-30881)Kumar Aditya2022-01-251-6/+4
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* bpo-46080: fix argparse help generation exception in edge case (GH-30111)Felix Fontein2022-01-201-1/+1
| | | | | Fix an uncaught exception during help text generation when argparse.BooleanOptionalAction is used with default=argparse.SUPPRESS and help is specified.
* argparse docs: prog default is the basename of argv[0] (GH-30298)Jade Lovelace2022-01-021-1/+2
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* bpo-22047: [argparse] deprecate nested argument groups and mutually ↵Irit Katriel2021-12-161-0/+18
| | | | exclusive groups (GH-30098)
* bpo-26952: [argparse] clearer error when formatting an empty mutually… ↵Irit Katriel2021-12-151-0/+3
| | | | (GH-30099)
* bpo-45235: Revert an argparse bugfix that caused a regression (GH-29525)Raymond Hettinger2021-11-121-7/+6
| | | | | * Revert "bpo-45235: Fix argparse overrides namespace with subparser defaults (GH-28420) (GH-28443)" This reverts commit a18d52269ab6071a605d6c72f6af585a4c533ca4.
* bpo-24444: fix an error in argparse help when help for an option is blank ↵andrei kulakov2021-10-131-5/+6
| | | | (GH-28050)
* bpo-45235: Fix argparse overrides namespace with subparser defaults (GH-28420)Adam Schwalm2021-09-181-6/+7
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* bpo-38956: don't print BooleanOptionalAction's default twice (GH-27672)Maximilian Hils2021-08-161-1/+1
| | | | Co-authored-by: Micky Yun Chan <michan@redhat.com>
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