cpython-lru_cache-weakref: Python/sysmodule.c comparison

Patch #1601678: move intern() to sys.intern().

author	Georg Brandl <georg@python.org>
date	Tue, 19 Dec 2006 20:50:34 +0000
parents	cc992d75d5b3
children	6ebad2a6b990

comparison

equal deleted inserted replaced

-:9548ca0e6560
+:8565e3fea9b6
 Return the encoding used to convert Unicode filenames in\n\
 operating system filenames."
 );
 #endif
+static PyObject *
+sys_intern(PyObject *self, PyObject *args)
+{
+	PyObject *s;
+	if (!PyArg_ParseTuple(args, "S:intern", &s))
+		return NULL;
+	if (!PyString_CheckExact(s)) {
+		PyErr_SetString(PyExc_TypeError,
+				"can't intern subclass of string");
+		return NULL;
+	}
+	Py_INCREF(s);
+	PyString_InternInPlace(&s);
+	return s;
+}
+PyDoc_STRVAR(intern_doc,
+"intern(string) -> string\n\
+\n\
+``Intern'' the given string.  This enters the string in the (global)\n\
+table of interned strings whose purpose is to speed up dictionary lookups.\n\
+Return the string itself or the previously interned string object with the\n\
+same value.");
 /*
 * Cached interned string objects used for calling the profile and
 * trace functions.  Initialized by trace_init().
 */
 	{"_getframe", sys_getframe, METH_VARARGS, getframe_doc},
 #ifdef MS_WINDOWS
 	{"getwindowsversion", (PyCFunction)sys_getwindowsversion, METH_NOARGS,
 	 getwindowsversion_doc},
 #endif /* MS_WINDOWS */
+	{"intern",	sys_intern,     METH_VARARGS, intern_doc},
 #ifdef USE_MALLOPT
 	{"mdebug",	sys_mdebug, METH_VARARGS},
 #endif
 #ifdef Py_USING_UNICODE
 	{"setdefaultencoding", sys_setdefaultencoding, METH_VARARGS,

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