At 03:25 AM 10/3/2006, Andre Roberge wrote: >On 10/3/06, Dick Moores <[EMAIL PROTECTED]> wrote: > > Is there Python code for accessing an object's reference count? > >See sys.getrefcount.
Fascinating. And surprising. >>> from sys import getrefcount >>> getrefcount(1) 493 >>> getrefcount(2) 157 >>> getrefcount(3) 60 >>> getrefcount(22) 12 >>> getrefcount(222) 3 >>> getrefcount(222234523452345345) 2 >>> getrefcount(2.23452345345) 2 >>> That refcount for 1 (and 2, 3, and 12) is puzzling to me. I closed python, called python, and tried it again. Essentially no change. When would this go to zero? Only when I shut off my computer? I just answered that last question by shutting off my computer, and found >>> from sys import getrefcount >>> getrefcount(1) 493 >>> q = 1 >>> getrefcount(1) 499 >>> w = 1 >>> getrefcount(1) 500 >>> del w >>> getrefcount(1) 499 >>> q = 2 >>> getrefcount(1) 498 >>> Still 493. Why? Then after "q = 1", 499, not 494. Why? The other refcounts, after w=1, del w, and q=2, are as I expected. Thanks, Dick _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor