self.check_iterator(iter(spam,20),list(range(10)),pickle=False)

deftest_iter_function_concealing_reentrant_exhaustion(self):

defexhaust(iterator):

list(iterator)

defspam():

ifspam.is_recursive_call:

spam.is_recursive_call=True

exhaust(spam.iterator)

spam.is_recursive_call=False

spam.iterator=iter(spam,NO_MORE)

withself.assertRaises(StopIteration):

next(spam.iterator)

deftest_exception_function(self):

defspam(state=[0]):

Callable iterators no longer raise:class:`SystemError` when the

callable object exhausts the iterator but forgets to either return a

sentinel value or raise:class:`StopIteration`.

}

result=_PyObject_CallNoArgs(it->it_callable);

if (result!=NULL){

if (result!=NULL&&it->it_sentinel!=NULL){

intok;

ok=PyObject_RichCompareBool(it->it_sentinel,result,Py_EQ);

if (ok==0) {

returnresult;/* Common case, fast path */

}

Py_DECREF(result);

if (ok>0) {

Py_CLEAR(it->it_callable);

Py_CLEAR(it->it_sentinel);

Py_CLEAR(it->it_callable);

Py_CLEAR(it->it_sentinel);

}

Py_XDECREF(result);

returnNULL;

}