Sourced from click's releases.

8.2.1

This is the Click 8.2.1 fix release, which fixes bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/click/8.2.1/ Changes: https://click.palletsprojects.com/page/changes/#version-8-2-1 Milestone: https://github.com/pallets/click/milestone/24?closed=1

• Fix flag value handling for flag options with a provided type. #2894 #2897
• Fix shell completion for nested groups. #2906
• Flush sys.stderr at the end of CliRunner.invoke. #2682
• Fix EOF handling for stdin input in CliRunner. #2787

Sourced from click's changelog.

Version 8.2.1

Released 2025-05-20

• Fix flag value handling for flag options with a provided type. :issue:2894 :issue:2897 :pr:2930
• Fix shell completion for nested groups. :issue:2906 :pr:2907
• Flush sys.stderr at the end of CliRunner.invoke. :issue:2682
• Fix EOF handling for stdin input in CliRunner. :issue:2787

Version 8.2.0

Released 2025-05-10

• Drop support for Python 3.7, 3.8, and 3.9. :pr:2588 :pr:2893

• Use modern packaging metadata with pyproject.toml instead of setup.cfg. :pr:2438

• Use flit_core instead of setuptools as build backend. :pr:2543

• Deprecate the __version__ attribute. Use feature detection, or importlib.metadata.version("click"), instead. :issue:2598

• BaseCommand is deprecated. Command is the base class for all commands. :issue:2589

• MultiCommand is deprecated. Group is the base class for all group commands. :issue:2590

• The current parser and related classes and methods, are deprecated. :issue:2205

  • OptionParser and the parser module, which is a modified copy of optparse in the standard library.
  • Context.protected_args is unneeded. Context.args contains any remaining arguments while parsing.
  • Parameter.add_to_parser (on both Argument and Option) is unneeded. Parsing works directly without building a separate parser.
  • split_arg_string is moved from parser to shell_completion.

• Enable deferred evaluation of annotations with from __future__ import annotations. :pr:2270

• When generating a command's name from a decorated function's name, the suffixes _command, _cmd, _group, and _grp are removed. :issue:2322

• Show the types.ParamType.name for types.Choice options within --help message if show_choices=False is specified. :issue:2356

• Do not display default values in prompts when Option.show_default is False. :pr:2509

• Add get_help_extra method on Option to fetch the generated extra items used in get_help_record to render help text. :issue:2516 :pr:2517

... (truncated)

• fd183b2 release version 8.2.1
• 262bdf0 Raise an exception on end of input in CliRunner (#2934)
• 80efdf6 Raise an exception on end of input in CliRunner
• cfa6f4a Flush sys.stderr when CliRunner finalizes (#2933)
• f3a4363 flush sys.stderr when CliRunner.invoke finalizes
• b7cf069 fix shell completion for nested groups (#2935)
• 7c575d6 parametrize test
• ac6a2ac Fix shell completion for nested groups
• 884af5c Fix flag value set when is_flag=True and type is provided (#2930)
• 4fd2fea Fix condition for setting flag value when type is provided
• Additional commits viewable in compare view

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