gc.get_referrers trouble
Skip Montanaro
skip at pobox.com
Tue Sep 7 14:16:44 EDT 2004
Diez> import gc
Diez> a = [1]
Diez> print gc.get_referrers(1)
Diez> Running that from bash gives me this:
Diez> # python /tmp/test.py | wc
Diez> 23 7196 67165
Diez> Now I'm confused - how do I interpret the results of
Diez> get_referrers() correctly?
Try your test with an object that's not massively shared:
% python
Python 2.4a2 (#46, Aug 29 2004, 08:53:23)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
import>>> import gc
>>> a = [1000]
>>> print gc.get_referrers(1000)
[(1000, None)]
CPython maintains a list of small integers (range(-1, 100) I believe) that
are reused and shared.
Skip
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