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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: string interpolation for python
Date: Sat, 31 Mar 2012 06:29:11 -0400
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On 3/31/2012 2:22 AM, Yingjie Lan wrote:
> Hi all,
>
> I'd really like to share this idea of string interpolation for formatting.
> Let's start with some code:
>
>  >>> name = "Shrek"
>  >>> print( "Hi, $name$!")
> Hi, Shrek!
>  >>> balls = 30
>  >>> print( "We have $balls$ balls.")
> We have 30 balls

You can already do essentially that without adding a special-case string 
formatting method to the general methods we already have.

 >>> balls = 5
 >>> people = 3
 >>> 'The {people} people have {balls} balls.'.format(**locals())
'The 3 people have 5 balls.'

-- 
Terry Jan Reedy