in doubles/verification.py [0:0]
def _verify_arguments(method, method_name, args, kwargs):
try:
getcallargs(method, *args, **kwargs)
except TypeError as e:
if not _is_python_function(method):
raise VerifyingBuiltinDoubleArgumentError(str(e))
raise VerifyingDoubleArgumentError(str(e))
except IndexError as e:
if _is_python_33():
_raise_doubles_error_from_index_error(method_name)
else:
raise e