8 There are only a couple of functions specifically for working with iterators.
10 .. cfunction:: int PyIter_Check(PyObject *o)
12 Return true if the object *o* supports the iterator protocol.
15 .. cfunction:: PyObject* PyIter_Next(PyObject *o)
17 Return the next value from the iteration *o*. If the object is an iterator,
18 this retrieves the next value from the iteration, and returns *NULL* with no
19 exception set if there are no remaining items. If the object is not an
20 iterator, :exc:`TypeError` is raised, or if there is an error in retrieving the
21 item, returns *NULL* and passes along the exception.
23 To write a loop which iterates over an iterator, the C code should look
26 PyObject *iterator = PyObject_GetIter(obj);
29 if (iterator == NULL) {
33 while (item = PyIter_Next(iterator)) {
34 /* do something with item */
36 /* release reference when done */
42 if (PyErr_Occurred()) {
46 /* continue doing useful work */