diff options
| -rw-r--r-- | Misc/NEWS.d/next/Library/2021-03-13-08-18-01.bpo-41361.lXDIlr.rst | 1 | ||||
| -rw-r--r-- | Modules/_collectionsmodule.c | 13 |
2 files changed, 13 insertions, 1 deletions
diff --git a/Misc/NEWS.d/next/Library/2021-03-13-08-18-01.bpo-41361.lXDIlr.rst b/Misc/NEWS.d/next/Library/2021-03-13-08-18-01.bpo-41361.lXDIlr.rst new file mode 100644 index 0000000..19e08f8 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2021-03-13-08-18-01.bpo-41361.lXDIlr.rst @@ -0,0 +1 @@ +:meth:`~collections.deque.rotate` calls are now slightly faster due to faster argument parsing.
\ No newline at end of file diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c index 90bafb0..ca63f71 100644 --- a/Modules/_collectionsmodule.c +++ b/Modules/_collectionsmodule.c @@ -880,9 +880,20 @@ deque_rotate(dequeobject *deque, PyObject *const *args, Py_ssize_t nargs) { Py_ssize_t n=1; - if (!_PyArg_ParseStack(args, nargs, "|n:rotate", &n)) { + if (!_PyArg_CheckPositional("deque.rotate", nargs, 0, 1)) { return NULL; } + if (nargs) { + PyObject *index = _PyNumber_Index(args[0]); + if (index == NULL) { + return NULL; + } + n = PyLong_AsSsize_t(index); + Py_DECREF(index); + if (n == -1 && PyErr_Occurred()) { + return NULL; + } + } if (!_deque_rotate(deque, n)) Py_RETURN_NONE; |