[Python-Dev] counterintuitive behavior (bug?) in Counter with += (original) (raw)

Lars Buitinck L.J.Buitinck at uva.nl
Fri Oct 7 10:53:47 CEST 2011


2011/10/6 Petri Lehtinen <petri at digip.org>:

Lars Buitinck wrote:

>>> from collections import Counter >>> a = Counter([1,2,3]) >>> b = a >>> a += Counter([3,4,5]) >>> a is b False Sounds like a good idea to me. You should open an issue in the tracker at http://bugs.python.org/.

Done that: http://bugs.python.org/issue13121

-- Lars Buitinck Scientific programmer, ILPS University of Amsterdam



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