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Groups > comp.lang.python > #7092

Re: new string formatting with local variables

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On Mon, Jun 6, 2011 at 9:15 AM, Jabba Laci <jabba.laci@gmail.com> wrote:
> Hi,
>
> I'd like to simplify the following string formatting:
>
> solo = 'Han Solo'
> jabba = 'Jabba the Hutt'
> print "{solo} was captured by {jabba}".format(solo=solo, jabba=jabba)
> # Han Solo was captured by Jabba the Hutt
>
> What I don't like here is this: "solo=solo, jabba=jabba", i.e. the
> same thing is repeated. In "solo=solo", the left part is a key and the
> right part is the value of a local variable, but it looks strange.
>
> I'd like something like this:
> print "{solo} was captured by {jabba}".format(locals())        # WRONG!
>
> But it doesn't work.
>
> Do you have any idea?

print "{solo} was captured by {jabba}".format(**locals()) # RIGHT

You must use prefix-** in the call to unpack the mapping as keyword arguments.
Note that using locals() like this isn't best-practice.

Cheers,
Chris
--
http://rebertia.com

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Re: new string formatting with local variables Chris Rebert <clp2@rebertia.com> - 2011-06-06 09:21 -0700
  Re: new string formatting with local variables Ben Finney <ben+python@benfinney.id.au> - 2011-06-07 10:11 +1000
    Re: new string formatting with local variables Ian Kelly <ian.g.kelly@gmail.com> - 2011-06-06 18:31 -0600
    Re: new string formatting with local variables Ian Kelly <ian.g.kelly@gmail.com> - 2011-06-06 18:38 -0600
    Re: new string formatting with local variables Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-06-07 03:57 +0000
      Re: new string formatting with local variables Ben Finney <ben+python@benfinney.id.au> - 2011-06-07 17:47 +1000

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