[issue40257] Improve the use of __doc__ in pydoc

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

help(1) as well as help(int) output the help for int. The only difference is that the former has the first line "Help on int object:", and the latter -- "Help on class int in module builtins:".

If IPython wants to output the help on the instance, it should change the implementation of `?` and `??`. It would be better if it correctly attribute the source of the docstring: the object itself, its class or its superclass. It was difficult to distinguish these cases before, now it is easier.

By the way, I just tried IPython 5.5.0 with Python 3.6.9, and it does not output the docstring either:

In [1]: a = 1

In [2]: a??
Type:        int
String form: 1

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<https://bugs.python.org/issue40257>
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