1) isfunction() returns `True` for partial object only when one passes `func` attribute of it.
2) For instance, `isgeneratorfunction()` and `iscoroutinefunction()` for partial obj work with passing partial obj as well as with passing `func` attr of this obj, when obj is partially applied generator function or partially applied coroutine function respectively.

I offer to unify behavior for handling partial object for r'inspect.is*function()' by the next way:
1) Add `functools._unwrap_partial()` to `inspect.isfunction()` as well as it were done in other r'inspect.is*function()'.

P.S.I'm ready to deal with this issue.  

Python 3.10.2 (main, Jan 15 2022, 19:56:27) [GCC 11.1.0]
Type 'copyright', 'credits' or 'license' for more information

Operating System: Manjaro Linux
KDE Plasma Version: 5.23.5
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.4.176-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz
Memory: 11.6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520

Frankly, it doesn't make sense that isgeneratorfunction or iscoroutinefunction unwrap partials at all. The original justification for making them do that back in https://bugs.python.org/issue34890 was invalid - the original argument was that isfunction unwraps partials, but it doesn't, and I don't think it ever did.

isfunction is supposed to be a very specific check for Python function objects. It rejects all sorts of other callables, like sum (a built-in function), super (a type), or method objects (which wrap functions in a very similar way to partial). Having it be a check for *either* a Python function object *or* a partial object wrapping a Python function object seems to just make it less useful.

Kevin, thanks for answer!

In that case, I may conclude isgeneratorfunction,
iscoroutinefunction, isasyncgenfunction from python3.7 are more determinated, in my view, cause partial obj has `func` attr for interaction with these funcs anyway, so it isn't need of an alternative.

I suppose isgeneratorfunction,
iscoroutinefunction, isasyncgenfunction were modified to treat partial obj like regular function. But then without modifying isfunction as well, this approach won't work in full measure.