Finding the instance reference of an object

[Terry Reedy]

greg wrote:
> Arnaud Delobelle wrote:
>
>>     (CBV) An evaluation strategy where arguments are evaluated before
>>     the function or procedure is entered. Only the values of the
>>     arguments are passed and changes to the arguments within the called
>>     procedure have no effect on the actual arguments as seen by the
>>     caller.
> 
> That hinges on what exactly is meant by "changes to
> the arguments".

Mutating them, like Python does, which is why calling Python CBV leads 
people to write buggy code.

 >In Python it can only mean assigning
> directly to the bare name -- anything else isn't
> changing the argument itself, but something else to
> which the argument refers.

Hogwash.  The argument is the object and mutable objects can be changed 
as seen by the caller.