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Optimization to stop creating new small longs and use the

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one previously stored. Issue 2417.
This commit is contained in:
Facundo Batista 2008-07-24 18:57:11 +00:00
parent 00c88f090d
commit 6e6f59b1c9
2 changed files with 46 additions and 22 deletions
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18
Lib/test/test_long.py
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@ -805,6 +805,24 @@ class LongTest(unittest.TestCase):
self.assertRaises(ZeroDivisionError, eval, zero, namespace)
def test_small_ints(self):
for i in range(-5, 257):
self.assertTrue(i is i + 0)
self.assertTrue(i is i * 1)
self.assertTrue(i is i - 0)
self.assertTrue(i is i // 1)
self.assertTrue(i is i & -1)
self.assertTrue(i is i | 0)
self.assertTrue(i is i ^ 0)
self.assertTrue(i is ~~i)
self.assertTrue(i is i**1)
self.assertTrue(i is int(str(i)))
self.assertTrue(i is i<<2>>2, str(i))
# corner cases
i = 1 << 70
self.assertTrue(i - i is 0)
self.assertTrue(0 * i is 0)
def test_main():
support.run_unittest(LongTest)