Bizarre method keyword-arg bug.

[Fredrik Lundh]

Robert Brown wrote:

> You may find the above surprising, but Common Lisp users expect the default
> argument expression to be evaluated anew when need by a function call:

> I find the Lisp approach more reasonable.  Also, an argument based on
> performance for Python's current behavior seems dubious, given the
> language's other performance robbing design choices.

well, I'd say an argument based on "Common Lisp users" is a lot more 
dubious ;-)

(and some of us are actually capable of writing pretty fast code in 
Python.  slowing the language down (or crippling it) because some blub 
programmers screams "bug!" instead of looking things up in the handbook 
when they stumble upon something they haven't seen before doesn't strike 
me as a good use of anyone's time.)

</F>