"See help(type(self)) for accurate signature" in `__init__`'s docstring is misleading

Feature or enhancement

Let's say I have a simple class:

class A:
    def __init__(self, a):
        self.a = a

help(A) will produce:

Help on class A in module __main__:

class A(builtins.object)
 |  A(a)
 |
 |  Methods defined here:
 |
 |  __init__(self, a)
 |      Initialize self.  See help(type(self)) for accurate signature.
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |
 |  __dict__
 |      dictionary for instance variables
 |
 |  __weakref__
 |      list of weak references to the object

Note that the signature is already accurate. But, now I see this message: See help(type(self)) for accurate signature.. Let's try to do something about it.

Let's follow the instruction:

class A:
    def __init__(self, a):
        help(type(self))
        self.a = a

It will produce:

Help on class A in module __main__:

class A(builtins.object)
 |  A(a)
 |
 |  Methods defined here:
 |
 |  __init__(self, a)
 |      Initialize self.  See help(type(self)) for accurate signature.
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |
 |  __dict__
 |      dictionary for instance variables
 |
 |  __weakref__
 |      list of weak references to the object

Exactly the same signature. With exactly the same message.

Now, let's try a different example, an empty class:

class B: ...

help(B.__init__) will say:

Help on wrapper_descriptor:

__init__(self, /, *args, **kwargs) unbound builtins.object method
    Initialize self.  See help(type(self)) for accurate signature.

And help(B) will say (notice that there would be no __init__ at all):

Help on class B in module __main__:

class B(builtins.object)
 |  Data descriptors defined here:
 |
 |  __dict__
 |      dictionary for instance variables
 |
 |  __weakref__
 |      list of weak references to the object

Is this message See help(type(self)) for accurate signature really useful? When do users benefit from seeing it?

help(A)、help(A.init)、および空のクラス B を使って、報告された出力を再現します。組み込みの init の docstring と pydoc のクラス出力がどこで生成されるかを追跡し、関連する回帰テスト領域を特定します。誤解を招く案内が一貫して修正または削除され、help の出力がテストでカバーされれば完了です。