current dir gives output like this,```from collection import OrderedDictod = OrderedDict({'a': 1, 'b': 2, 'c': 3})print(dir(od))``````['__class__', '__contains__', '__delattr__', '__delitem__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'clear', 'copy', 'fromkeys', 'get', 'items', 'keys', 'move_to_end', 'pop', 'popitem', 'setdefault', 'update', 'values']```but wouldn't it be better if the output was like this,```{'OrderedDict': {'__contains__', '__delitem__', '__dir__', '__eq__',                  '__format__', '__ge__', '__getitem__', '__gt__', '__init__', '__init_subclass__',                  '__iter__', '__le__', '__lt__', '__ne__', '__reduce__', '__reduce_ex__',                  '__repr__', '__reversed__', '__setitem__', '__sizeof__', '__subclasshook__',                  'clear', 'copy', 'fromkeys', 'get', 'items', 'keys', 'move_to_end', 'pop',                  'popitem', 'setdefault', 'update', 'values'},'dict': {'__getattribute__', '__len__', '__new__'},'object': {'__delattr__', '__setattr__', '__str__'}}```???

This would be nice, but backward compatibility alone means we can't change dir() to return a dictionary. What you propose would make more sense as a new function, perhaps in a package like pydoc or a third-party tool like IPython.

would adding an argument to dir be a possible solution,like,```l = [1, 2, 3]dir(l, categorize=True)```

plus I would want it to have some more methods,```l = [1, 2, 3]```using enhanced dir should give,```{'list': {'__add__', '__contains__', '__delitem__', '__eq__', '__ge__',         '__getattribute__', '__getitem__', '__gt__', '__iadd__', '__imul__',         '__init__', '__init_subclass__', '__iter__', '__le__', '__len__',         '__lt__', '__mul__', '__ne__', '__new__', '__repr__',         '__reversed__', '__rmul__', '__setitem__', '__sizeof__',         '__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend',         'index', 'insert', 'pop', 'remove', 'reverse', 'sort'},'object': {'__delattr__', '__dir__', '__format__', '__reduce__', '__reduce_ex__', '__setattr__', '__str__'}}```obtained from, (here only printing, made a dictionary in the implementation in the PR)```for j in dir(l):    print(f'l.{j}.__qualname__')```this check fails for,```{'list': {'__doc__', '__hash__', '__class__'}}```I would also want these,```{'list': {'__instancecheck__','__subclasscheck__', '__subclasses__', 'mro'}, 'type': {'__call__', '__prepare__'}}```which were obtained from,```for j in set(dir(type(l))) - set(dir(l)):    print(f'l.{j}.__qualname__')```and it fails for,```{'list': {'__abstractmethods__', '__base__', '__bases__', '__basicsize__', '__dict__', '__dictoffset__',           '__flags__', '__itemsize__', '__module__', '__mro__',           '__name__', '__qualname__', '__text_signature__', '__weakrefoffset__'}```