[Python-checkins] r69811 - in python/trunk: Lib/test/test_opcodes.py Python/ceval.c
collin.winter
python-checkins at python.org
Fri Feb 20 20:30:42 CET 2009
Author: collin.winter
Date: Fri Feb 20 20:30:41 2009
New Revision: 69811
Log:
Issue 5176: special-case string formatting in BINARY_MODULO implementation. This shows a modest (1-3%) speed-up in templating systems, for example.
Modified:
python/trunk/Lib/test/test_opcodes.py
python/trunk/Python/ceval.c
Modified: python/trunk/Lib/test/test_opcodes.py
==============================================================================
--- python/trunk/Lib/test/test_opcodes.py (original)
+++ python/trunk/Lib/test/test_opcodes.py Fri Feb 20 20:30:41 2009
@@ -102,6 +102,12 @@
g = eval('lambda a=1: None')
self.assertNotEquals(f, g)
+ def test_modulo_of_string_subclasses(self):
+ class MyString(str):
+ def __mod__(self, value):
+ return 42
+ self.assertEqual(MyString() % 3, 42)
+
def test_main():
run_unittest(OpcodeTest)
Modified: python/trunk/Python/ceval.c
==============================================================================
--- python/trunk/Python/ceval.c (original)
+++ python/trunk/Python/ceval.c Fri Feb 20 20:30:41 2009
@@ -1283,7 +1283,10 @@
case BINARY_MODULO:
w = POP();
v = TOP();
- x = PyNumber_Remainder(v, w);
+ if (PyString_CheckExact(v))
+ x = PyString_Format(v, w);
+ else
+ x = PyNumber_Remainder(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
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