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Re: What is this syntax ?

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On Sun, Jun 19, 2011 at 2:06 PM, Vito 'ZeD' De Tullio
<zak.mc.kraken@libero.it> wrote:
> Roy Smith wrote:
>
>> There's something nice about building up strings in-line, as
>> opposed to having to look somewhere to see what's being interpolated.
>> To give a more complex example, consider:
>>
>> print "$scheme://$host:$port/$route#$fragment"
>>
>> That certainly seems easier to me to read than:
>>
>> print "%s://%s:%s/%s#%s" % (scheme,
>>                             port,
>>                             host,
>>                             route,
>>                             fragment)
>>
>> because I don't have to line up the nth format specifier with the nth
>> data item.
>
> well, in python3 you can use dict to format strings
>
>>>> print("%(a)s" % {'a':'b'})
> b
>
> and you can achieve php interpolation via locals()
>
>>>> a = 'b'
>>>> print("%(a)s" % locals())
> b
>
>
> --
> By ZeD

That's a lot older than Python 3. Here's the example from the 2.3
docs:  http://docs.python.org/release/2.3/lib/typesseq-strings.html

Python 3 added a different syntax for string formatting, using .NET's
formatting syntax instead of C's.

"{scheme}://{host}:{port}/{route}#{fragment}".format(locals())

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What is this syntax ? candide <candide@free.invalid> - 2011-06-19 15:41 +0200
  Re: What is this syntax ? Laurent Claessens <moky.math@gmail.com> - 2011-06-19 15:50 +0200
  Re: What is this syntax ? Noah Hall <enalicho@gmail.com> - 2011-06-19 14:58 +0100
  Re: What is this syntax ? Chris Angelico <rosuav@gmail.com> - 2011-06-20 00:03 +1000
  Re: What is this syntax ? candide <candide@free.invalid> - 2011-06-19 17:08 +0200
    Re: What is this syntax ? Roy Smith <roy@panix.com> - 2011-06-19 11:39 -0400
      Re: What is this syntax ? rusi <rustompmody@gmail.com> - 2011-06-19 09:58 -0700
        Re: What is this syntax ? Roy Smith <roy@panix.com> - 2011-06-19 16:20 -0400
          Re: What is this syntax ? Vito 'ZeD' De Tullio <zak.mc.kraken@libero.it> - 2011-06-19 23:06 +0200
            Re: What is this syntax ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-06-19 23:19 +0000
              Re: What is this syntax ? Vito 'ZeD' De Tullio <zak.mc.kraken@libero.it> - 2011-06-20 07:42 +0200
          Re: What is this syntax ? Benjamin Kaplan <benjamin.kaplan@case.edu> - 2011-06-19 15:29 -0700

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