In Python 3.6:

>>> sorted(iterable=[])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
SystemError: Objects/tupleobject.c:81: bad argument to internal function

In Python 3.5 and 2.7:

>>> sorted(iterable=[])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'iterable' is an invalid keyword argument for this function