Neil Cerutti, 25.03.2010 13:37:
On 2010-03-25, Steven D'Aprano wrote:
You might not want to be so glib. The sum doc sure doesn't
sound like it should work on lists.
Returns the sum of a sequence of numbers (NOT strings) plus the
value of parameter 'start' (which defaults to 0).
What part of that suggested to you that sum might not be polymorphic?
Sure, it says numbers (which should be changed, in my opinion), but it
doesn't specify what sort of numbers -- ints, floats, or custom types
that have an __add__ method.
WTF.
Warning: truth found!
Stefan
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