but `callable` returns `True` for classes with `__call__` also, it does not check whether the argument passed to it is a function or not.

I want some way to return `True` for both builtin functions and Python functions, but not for classes.

And similarly, some way to return `True` for both builtin methods and Python methods.

Should the documentation for `inspect.isfunction` include, `this does not include builtin functions.`, and similarly for `inspect.ismethod`?

Should I create a PR to add these two sentences to the documentation?