Message274149
Greetings,
I've encountered strange behavior when using functools.lru_cache as a function (not as a decorator): it is at least miscounting misses, but probably not work at all, when the result of functools.lru_cache()(func) is saved in variable other than 'func'. Consider this snippet:
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
f = functools.lru_cache()(factorial)
f(20)
print(f.cache_info())
Output should be: CacheInfo(hits=0, misses=21, maxsize=128, currsize=21)
Instead it is: CacheInfo(hits=0, misses=1, maxsize=128, currsize=1)
I'm using Python 3.5.2 64bit on Windows 7 Professional 64bit.
I've written 3 unittests (using built-in module), which are attached as a file. I don't know how to comment them (conceptually, not syntactically), sorry.
Fedor |
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Date |
User |
Action |
Args |
2016-09-01 16:08:44 | Федор Лянгузов | set | recipients:
+ Федор Лянгузов |
2016-09-01 16:08:44 | Федор Лянгузов | set | messageid: <1472746124.57.0.326377422927.issue27933@psf.upfronthosting.co.za> |
2016-09-01 16:08:44 | Федор Лянгузов | link | issue27933 messages |
2016-09-01 16:08:44 | Федор Лянгузов | create | |
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