restriction on sum: intentional bug?
dickinsm at gmail.com
Sun Oct 18 00:00:25 CEST 2009
On Oct 17, 9:49 pm, a... at pythoncraft.com (Aahz) wrote:
> Ahhh, I vaguely remember there being some discussion of this when sum()
> was introduced -- I think that using InPlaceAdd would have caused bad
> behavior when the initial list was referred to by multiple names.
Thanks for the pointer: I've now found the thread. It looks like
Alex Martelli made this exact change 6 years ago, and then had to
revert it because it changed behaviour:
I've just checked in an extra test to test_builtin.py to make sure
this bright idea isn't repeated. :)
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