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Issue 13227: Option to make the lru_cache() type specific (suggested by Andrew Koenig).

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This commit is contained in:
Raymond Hettinger 2011-10-20 08:57:45 -07:00
parent e3455c026a
commit cd9fdfd652
5 changed files with 49 additions and 12 deletions
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16
Lib/test/test_functools.py
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@ -734,6 +734,22 @@ def func(i):
with self.assertRaises(IndexError):
func(15)
def test_lru_with_types(self):
for maxsize in (None, 100):
@functools.lru_cache(maxsize=maxsize, typed=True)
def square(x):
return x * x
self.assertEqual(square(3), 9)
self.assertEqual(type(square(3)), type(9))
self.assertEqual(square(3.0), 9.0)
self.assertEqual(type(square(3.0)), type(9.0))
self.assertEqual(square(x=3), 9)
self.assertEqual(type(square(x=3)), type(9))
self.assertEqual(square(x=3.0), 9.0)
self.assertEqual(type(square(x=3.0)), type(9.0))
self.assertEqual(square.cache_info().hits, 4)
self.assertEqual(square.cache_info().misses, 4)
def test_main(verbose=None):
test_classes = (
TestPartial,