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bpo-30537: use PyNumber in itertools.islice instead of PyLong (#1918)

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* bpo-30537: use PyNumber in itertools instead of PyLong

* bpo-30537: revert changes except to islice_new

* bpo-30537: test itertools.islice and add entry to Misc/NEWS
This commit is contained in:
Will Roberts 2017-06-08 08:03:04 +02:00 • committed by Raymond Hettinger
parent 5edf827c80
commit 0ecdc52514
3 changed files with 20 additions and 4 deletions
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8
Modules/itertoolsmodule.c
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@ -1417,7 +1417,7 @@ islice_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
numargs = PyTuple_Size(args);
if (numargs == 2) {
if (a1 != Py_None) {
stop = PyLong_AsSsize_t(a1);
stop = PyNumber_AsSsize_t(a1, PyExc_OverflowError);
if (stop == -1) {
if (PyErr_Occurred())
PyErr_Clear();
@ -1429,11 +1429,11 @@ islice_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
}
} else {
if (a1 != Py_None)
start = PyLong_AsSsize_t(a1);
start = PyNumber_AsSsize_t(a1, PyExc_OverflowError);
if (start == -1 && PyErr_Occurred())
PyErr_Clear();
if (a2 != Py_None) {
stop = PyLong_AsSsize_t(a2);
stop = PyNumber_AsSsize_t(a2, PyExc_OverflowError);
if (stop == -1) {
if (PyErr_Occurred())
PyErr_Clear();
@ -1453,7 +1453,7 @@ islice_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
if (a3 != NULL) {
if (a3 != Py_None)
step = PyLong_AsSsize_t(a3);
step = PyNumber_AsSsize_t(a3, PyExc_OverflowError);
if (step == -1 && PyErr_Occurred())
PyErr_Clear();
}