CallMethod is faster with a NULL third-argument than with an empty format string.

raymond.hettinger · raymond.hettinger · commit 8b3ad7b3eec5 · 2008-01-29T19:52:09.000Z
git-svn-id: http://svn.python.org/projects/python/trunk@60425 6015fed2-1504-0410-9fe1-9d1591cc4771
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
@@ -2050,7 +2050,7 @@ builtin_trunc(PyObject *self, PyObject *number)
         /* XXX: The py3k branch gets better errors for this by using
            _PyType_Lookup(), but since float's mro isn't set in py2.6,
            we just use PyObject_CallMethod here. */
-	return PyObject_CallMethod(number, "__trunc__", "");
+	return PyObject_CallMethod(number, "__trunc__", NULL);
 }
 
 PyDoc_STRVAR(trunc_doc,

Original file line number	Diff line number	Diff line change
`@@ -2050,7 +2050,7 @@ builtin_trunc(PyObject self, PyObject number)`
`2050`	`2050`	`/* XXX: The py3k branch gets better errors for this by using`
`2051`	`2051`	`_PyType_Lookup(), but since float's mro isn't set in py2.6,`
`2052`	`2052`	`we just use PyObject_CallMethod here. */`
`2053`		`- return PyObject_CallMethod(number, "__trunc__", "");`
	`2053`	`+ return PyObject_CallMethod(number, "__trunc__", NULL);`
`2054`	`2054`	`}`
`2055`	`2055`
`2056`	`2056`	`PyDoc_STRVAR(trunc_doc,`