Thanks for the tips! FWIW my guess is that since '.data' is dynamically generated property rather than an attribute, it is being freed and re-allocated in the loop, and once for each of my id() expressions.
On Fri, Sep 6, 2013 at 12:32 PM, Charles R Harris <charlesr.har...@gmail.com > wrote: > > > > On Fri, Sep 6, 2013 at 10:19 AM, James Bergstra <bergs...@iro.umontreal.ca > > wrote: > >> Hi, could someone help me understand why this assertion fails? >> >> def test_is(self): >> a = np.empty(1) >> b = np.empty(1) >> if a.data is not b.data: >> assert id(a.data) != id(b.data) # <-- fail >> >> I'm trying to write an alternate may_share_memory function. >> >> > id seems not as advertised: > > In [22]: for i in range(10): print id(a.data) > 66094640 > 66095792 > 66095792 > 66095792 > 66095792 > 66095792 > 66094640 > 66094640 > 66094640 > 66094640 > > Not sure why. > > Chuck > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > > -- http://www-etud.iro.umontreal.ca/~bergstrj
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