Official definition of call-by-value (Re: Finding the instance reference...)

[greg]

Steven D'Aprano wrote:

> If you insist that Python is call by value, the only way that can work is 
> by defining values to be references, which is nothing like Algol.

No, that's not the only way. You can also make it work
by accepting the original definition of call-by-value
at face value -- i.e. as equivalent to assignment,
without any implication of copying beyond what
assignment itself implies.

-- 
Greg