Making string-formatting smarter by handling generators?

[D'Arcy J.M. Cain]

On Wed, 27 Feb 2008 10:23:49 -0600
Tim Chase <python.list at tim.thechases.com> wrote:
> I can force it by wrapping the results of my generator in a call 
> to tuple() or list()

I think you are wrong about list().  Since map() returns a list already
it doesn't change anything.

>    print "%s, %s" % tuple(map(transform, pair))

Yes, it works.

> but it feels a bit hackish to me.

I can't imagine what else you could do to turn a list into a tuple that
would be less hackish than simply making it a tuple.

> I find I hit it mostly with calls to map() where I want to apply 
> some transform (as above) to all the items in a list of 
> parameters such as
> 
>    "%s=%s&%s=%s" % map(urllib.quote, params)

Isn't map() deprecated?  The above can be done with;

    "%s=%s&%s=%s" % tuple([urllib.quote(x) for x in params])

> Any suggestions?  (even if it's just "get over your hangup with 
> wrapping the results in list()/tuple()" :)

Pretty much.  :-)

-- 
D'Arcy J.M. Cain <darcy at druid.net>         |  Democracy is three wolves
http://www.druid.net/darcy/                |  and a sheep voting on
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