[Guido van Rossum]
#- > 1. When omitting the second argument, would supplying an
#- empty list return 0,
#- > None or raise an exception?
#-
#- Good question...
I'd go for None:
- Is a good default for a non-existing argument.
- If won't get None from sum() in other case (unless you do sum(None), but you should be aware of that).
. Facundo
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