[Python-ideas] About calling syntax

[Georg Brandl]

Bruce Frederiksen schrieb:
> Leif Walsh wrote:
>> On Tue, Sep 9, 2008 at 11:16 AM, Zaur Shibzoukhov <szport at gmail.com> wrote:
>>   
>>> Would be desirable to allow two equivalent forms of calling syntax in python:
>>>
>>> <caller>(<positional_arguments>, <keyword_arguments>)
>>>
>>> and
>>>
>>> <caller>(<keyword_arguments>, <positional_arguments>)
>>>
>>> ?
>>>     
>>
>> I think you are talking about PEP 3102: http://www.python.org/dev/peps/pep-3102/
>>   
> I don't think so.  This PEP does not affect the syntax for calling a 
> function.

It does, in that you can do

foo(*args, flag=True)

which is currently a SyntaxError.

However, exchanging poisitional and keyword arguments is not in the scope of
the PEP, and isn't likely to have any future at all -- it's just too ambiguous
when the called object has named arguments instead of a catch-all *args in
its signature.

Georg

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