test_functools.py 文件源码

def test_lru_with_maxsize_none(self):
        @functools.lru_cache(maxsize=None)
        def fib(n):
            if n < 2:
                return n
            return fib(n-1) + fib(n-2)
        self.assertEqual([fib(n) for n in range(16)],
            [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610])
        self.assertEqual(fib.cache_info(),
            functools._CacheInfo(hits=28, misses=16, maxsize=None, currsize=16))
        fib.cache_clear()
        self.assertEqual(fib.cache_info(),
            functools._CacheInfo(hits=0, misses=0, maxsize=None, currsize=0))