Mercurial > cpython-lru_cache-weakref
diff Objects/enumobject.c @ 30874:682d1b67c7b5 legacy-trunk
Optimize reversed(list) using a custom iterator.
| author | Raymond Hettinger <python@rcn.com> |
|---|---|
| date | Fri, 07 Nov 2003 15:38:09 +0000 |
| parents | 41c4e143e6e6 |
| children | f04ccc288542 |
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--- a/Objects/enumobject.c Fri Nov 07 11:45:34 2003 +0000 +++ b/Objects/enumobject.c Fri Nov 07 15:38:09 2003 +0000 @@ -174,8 +174,8 @@ if (!PyArg_UnpackTuple(args, "reversed", 1, 1, &seq)) return NULL; - /* Special case optimization for xrange */ - if (PyRange_Check(seq)) + /* Special case optimization for xrange and lists */ + if (PyRange_Check(seq) || PyList_Check(seq)) return PyObject_CallMethod(seq, "__reversed__", NULL); if (!PySequence_Check(seq)) {