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Thu Jan 29 23:30:27 CET 2009 · https://mail.python.org/pipermail/python-dev/2009-January/085672.html

Nick Coghlan <ncoghlan <at> gmail.com> writes:
> 
> If partial starts messing about looking for missing arguments and then
> slotting them in, then it is likely to slow down to the point where you
> would be better off skipping it and writing a dedicated function that
> adds the extra arguments.

Looking for missing arguments is very cheap, just raw pointer compares (Ellipsis
is a singleton). In comparison, the cost of executing a dedicated Python
function would be overwhelming.

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[Python-Dev] Partial function application 'from the right'