[Python-3000] Requiring () around lambda's argument list
Guido van Rossum
guido at python.org
Mon May 1 23:33:56 CEST 2006
Yes, they will always be needed, except perhaps for an empty parameter
list; you may be able to write lambda: blah instead of lambda(): blah.
--Guido
On 5/1/06, Raymond Hettinger <rhettinger at ewtllc.com> wrote:
> Guido van Rossum wrote:
>
> >I'm running into something that may make me require parentheses around
> >lambda's argument list.
> >
>
> Are the parens always needed or will it depend on the surrounding
> tokens? Adding extra parens feels a bit odd in the following situations:
>
> databases = filter(lambda name: name.startswith('2006'),
> cursor.fetchall())
> mylist.sort(key = lambda record: record.name.lower())
>
>
> Raymond
>
>
--
--Guido van Rossum (home page: http://www.python.org/~guido/)
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