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

[Antoine Pitrou]

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.