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Message from discussion Default arguments in Python - the return - running out of ideas but...
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Bruce Leban  
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 More options May 13 2009, 6:33 pm
From: Bruce Leban <br...@leapyear.org>
Date: Wed, 13 May 2009 15:33:48 -0700
Local: Wed, May 13 2009 6:33 pm
Subject: Re: [Python-ideas] Default arguments in Python - the return - running out of ideas but...
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Sure you can do it with a decorator. Although you might want one default to have this behavior and one not to. And putting the * right next to the lambda makes this a bit more explicit to my eye.

--- Bruce

Georg Brandl <g.bra...@gmx.net> wrote:
>Bruce Leban schrieb:
>> Here's what I'd like:

>> def myfunc(a, b, c = *lambda: expression):
>>   stuff

>> The use of the lambda keyword here makes the scope of any variables in
>> the expression clear. The use of the prefix * makes the syntax invalid
>> today, suggests dereferencing and doesn't hide the overhead.

>Why not

>@calldefaults
>def myfunc(a, b, c = lambda: expression):
>    pass

>which should be possible without introducing new syntax.

>Georg

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