[py3] Switched to Python 3-compatible introspection.

        except AttributeError:

            return default

        if callable(attr):

            # Check func_code.co_argcount rather than try/excepting the

            # Check __code__.co_argcount rather than try/excepting the

            # function and catching the TypeError, because something inside

            # the function may raise the TypeError. This technique is more

            # accurate.

            if hasattr(attr, 'func_code'):

                argcount = attr.func_code.co_argcount

            if hasattr(attr, '__code__'):

                argcount = attr.__code__.co_argcount

            else:

                argcount = attr.__call__.func_code.co_argcount

                argcount = attr.__call__.__code__.co_argcount

            if argcount == 2: # one argument is 'self'

                return attr(obj)

            else:

        if module is None:

            return True

        elif inspect.isfunction(object):

            return module.__dict__ is object.func_globals

            return module.__dict__ is object.__globals__

        elif inspect.isclass(object):

            return module.__name__ == object.__module__

        elif inspect.getmodule(object) is not None:

                if isinstance(val, staticmethod):

                    val = getattr(obj, valname)

                if isinstance(val, classmethod):

                    val = getattr(obj, valname).im_func

                    val = getattr(obj, valname).__func__

                # Recurse to methods, properties, and nested classes.

                if ((inspect.isfunction(val) or inspect.isclass(val) or

                    break

        # Find the line number for functions & methods.

        if inspect.ismethod(obj): obj = obj.im_func

        if inspect.isfunction(obj): obj = obj.func_code

        if inspect.ismethod(obj): obj = obj.__func__

        if inspect.isfunction(obj): obj = obj.__code__

        if inspect.istraceback(obj): obj = obj.tb_frame

        if inspect.isframe(obj): obj = obj.f_code

        if inspect.iscode(obj):