Python 3.14.0b1: test errors with `TypeError: Cmd2ArgumentParser.__init__() got an unexpected keyword argument 'color'`

[befeleme]

I try to build cmd2 with Python 3.14.0b1, but fail, because of the changes that happened in Python, resulting in a few errors in tests:

==================================== ERRORS ====================================
___________________ ERROR collecting tests/test_argparse.py ____________________
tests/test_argparse.py:263: in <module>
    class SubcommandApp(cmd2.Cmd):
tests/test_argparse.py:284: in SubcommandApp
    parser_foo = base_subparsers.add_parser('foo', help='foo help')
/usr/lib64/python3.14/argparse.py:1268: in add_parser
    parser = self._parser_class(**kwargs)
E   TypeError: Cmd2ArgumentParser.__init__() got an unexpected keyword argument 'color'
______________ ERROR collecting tests/test_argparse_completer.py _______________
tests/test_argparse_completer.py:50: in <module>
    class ArgparseCompleterTester(cmd2.Cmd):
tests/test_argparse_completer.py:64: in ArgparseCompleterTester
    music_create_parser = music_subparsers.add_parser('create', help='create music')
/usr/lib64/python3.14/argparse.py:1268: in add_parser
    parser = self._parser_class(**kwargs)
E   TypeError: Cmd2ArgumentParser.__init__() got an unexpected keyword argument 'color'
__________________ ERROR collecting tests/test_completion.py ___________________
tests/test_completion.py:23: in <module>
    from examples.subcommands import (
examples/subcommands.py:19: in <module>
    parser_foo = base_subparsers.add_parser('foo', help='foo help')
/usr/lib64/python3.14/argparse.py:1268: in add_parser
    parser = self._parser_class(**kwargs)
E   TypeError: Cmd2ArgumentParser.__init__() got an unexpected keyword argument 'color'
=========================== short test summary info ============================
ERROR tests/test_argparse.py - TypeError: Cmd2ArgumentParser.__init__() got a...
ERROR tests/test_argparse_completer.py - TypeError: Cmd2ArgumentParser.__init...
ERROR tests/test_completion.py - TypeError: Cmd2ArgumentParser.__init__() got...
!!!!!!!!!!!!!!!!!!! Interrupted: 3 errors during collection !!!!!!!!!!!!!!!!!!!!
============================== 3 errors in 1.58s ===============================

[tleonhardt]

@befeleme Thank you for bringing this to our attention. We will need to add automated testing for Python 3.14 pre-release versions and begin making some updates.

There are some major changes in the built-in argparse library in Python 3.14 that we will need to make sure our wrappers and mixins account for.

Of particular note is that argparse now optionally supports colored output for help text.

[tleonhardt]

Started working on PR #1419 . GitHub Action testing for 3.14-dev reproduces the errors you reported.