Configurables are expected to be configurables....

[Carreau]

The following line makes IPython crash.

%config Completer.use_jedi = False

With:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In [2], line 1
----> 1 get_ipython().run_line_magic('config', 'Completer.use_jedi = False')

File ~/dev/ipython/IPython/core/interactiveshell.py:2364, in InteractiveShell.run_line_magic(self, magic_name, line, _stack_depth)
   2362     kwargs['local_ns'] = self.get_local_scope(stack_depth)
   2363 with self.builtin_trap:
-> 2364     result = fn(*args, **kwargs)
   2365 return result

File ~/dev/ipython/IPython/core/magics/config.py:167, in ConfigMagics.config(self, s)
    165         print(c)
    166         print(c.__module__)
--> 167 configurables = sorted(set([ c for c in self.shell.configurables
    168                              if c.__class__.class_traits(config=True)
    169                              ]), key=lambda x: x.__class__.__name__)
    170 classnames = [ c.__class__.__name__ for c in configurables ]
    172 line = s.strip()

File ~/dev/ipython/IPython/core/magics/config.py:168, in <listcomp>(.0)
    165         print(c)
    166         print(c.__module__)
    167 configurables = sorted(set([ c for c in self.shell.configurables
--> 168                              if c.__class__.class_traits(config=True)
    169                              ]), key=lambda x: x.__class__.__name__)
    170 classnames = [ c.__class__.__name__ for c in configurables ]
    172 line = s.strip()

AttributeError: type object 'CommManager' has no attribute 'class_traits'

See #1037 as well, but #1037 is not an actual fix.

[blink1073]

I yanked 6.18.1

[blink1073]

Closing in favor of #1043