[Python-3000] Cleaning up argument list parsing (was Re: More wishful thinking)

[Nick Coghlan]

Jim Jewett wrote:
> On 4/20/06, Nick Coghlan <ncoghlan at gmail.com> wrote:
>> Some legal combinations:
>>
>>    f(1, 2, 3, d=1) # Positional args a, b and c
>>    f(1, 2, 3, 4, 5, 6, d=1) # Positional args a, b and c and (4, 5, 6) as args
>>    f(2, a=1, d=1) # Provide a as a keyword arg instead
> 
> So positional would still have to occur before keywords,  but only if
> they were passed as positional?  Today, that third one gets a
> TypeError for assigning multiple values to a.

My mistake - I thought that was currently legal, and didn't check it. So no, 
I'd keep the current rule - once you pass one positional argument as a 
keyword, you have to do the same for all subsequent positional arguments.

Which implies that "positional-only" arguments would have to come *before* the 
current normal arguments that can be passed either way.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
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