[Python-ideas] On function signature mismatch, include candidate function in traceback

Consider the following snippet:

``` def foo(a, b): pass

foo(1, 2, 3) ```

We all know what will happen.

``` File "<stdin>", line 4, in <module> foo(1, 2, 3) TypeError: foo() takes 2 positional arguments but 3 were given ```

Would it be reasonable to include the line number for the function `foo()` that it resolved the call to? I.e. 'File "<stdin>", line 1, in foo'.

There are situations (e.g. monkey patch) where this is not obvious. Would be great detail to include that in the traceback, I think.

Best Pol