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Add list.sorted() classmethod.

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This commit is contained in:
Raymond Hettinger 2003-10-29 06:54:43 +00:00
parent c43a7e7c37
commit 0a9b9da0c3
5 changed files with 113 additions and 6 deletions
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37
Objects/listobject.c
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@ -2000,6 +2000,38 @@ PyList_Sort(PyObject *v)
return 0;
}
static PyObject *
listsorted(PyObject *cls, PyObject *args, PyObject *kwds)
{
PyObject *newlist, *v, *seq, *compare=NULL, *keyfunc=NULL, *newargs;
static char *kwlist[] = {"iterable", "cmp", "key", "reverse", 0};
long reverse;
if (args != NULL) {
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|OOi:sorted",
kwlist, &seq, &compare, &keyfunc, &reverse))
return NULL;
}
newlist = PyObject_CallFunctionObjArgs(cls, seq, NULL);
if (newlist == NULL)
return NULL;
newargs = PyTuple_GetSlice(args, 1, 4);
if (newargs == NULL) {
Py_DECREF(newlist);
return NULL;
}
v = listsort((PyListObject *)newlist, newargs, kwds);
Py_DECREF(newargs);
if (v == NULL) {
Py_DECREF(newlist);
return NULL;
}
Py_DECREF(v);
return newlist;
}
static PyObject *
listreverse(PyListObject *self)
{
@ -2335,6 +2367,9 @@ PyDoc_STRVAR(reverse_doc,
PyDoc_STRVAR(sort_doc,
"L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;\n\
cmp(x, y) -> -1, 0, 1");
PyDoc_STRVAR(sorted_doc,
"list.sorted(iterable, cmp=None, key=None, reverse=False) --> new sorted list;\n\
cmp(x, y) -> -1, 0, 1");
static PyMethodDef list_methods[] = {
{"append", (PyCFunction)listappend, METH_O, append_doc},
@ -2346,6 +2381,8 @@ static PyMethodDef list_methods[] = {
{"count", (PyCFunction)listcount, METH_O, count_doc},
{"reverse", (PyCFunction)listreverse, METH_NOARGS, reverse_doc},
{"sort", (PyCFunction)listsort, METH_VARARGS | METH_KEYWORDS, sort_doc},
{"sorted", (PyCFunction)listsorted,
METH_VARARGS | METH_KEYWORDS | METH_CLASS, sorted_doc},
{NULL, NULL} /* sentinel */
};