On 2006-10-03, LaundroMat <[EMAIL PROTECTED]> wrote:
> Suppose I have this function:
>
> def f(var=1):
> return var*2
>
> What value do I have to pass to f() if I want it to evaluate var to 1?
> I know that f() will return 2, but what if I absolutely want to pass a
> value to f()? "None" doesn't seem to work..
>
> Thanks in advance.
>
I think the only general solution for your problem would be to
define a defaulter function. Something like the following:
Default = object()
def defaulter(f, *args):
while args:
if args[-1] is Default:
args = args[:-1]
else:
break
return f(*args)
The call:
defaulter(f, arg1, arg2, Default, ..., Default)
would then be equivallent to:
f(arg1, arg2)
Or in your case you would call:
defaulter(f, Default)
--
Antoon Pardon
--
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