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Re: string interpolation for python

References (3 earlier) <jl6ma0$ptg$1@dough.gmane.org> <mailman.1200.1333352587.3037.python-list@python.org> <4f7962b0$0$29981$c3e8da3$5496439d@news.astraweb.com> <1333357906.6147.YahooMailNeo@web121503.mail.ne1.yahoo.com> <CAMZYqRRV-MT6we=8JgXjR4LSvofaR35DH9_6-ZEbag-hmSr11g@mail.gmail.com>
Date 2012-04-02 05:00 -0700
From Yingjie Lan <lanyjie@yahoo.com>
Subject Re: string interpolation for python
Newsgroups comp.lang.python
Message-ID <mailman.1211.1333368019.3037.python-list@python.org> (permalink)

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> "Are you %(name)s" % locals() # or vars()



This partly solves the problem, however, you 
can't work with expressions inside, like:

> d"sin($x$) = $sin(x)$"


Also, what if locals() or vars() does not contain
the variable "x"? (x could be nonlocal or global).


> It's more conservative than hostile. Here's some insight:
> http://www.boredomandlaziness.org/2011/02/status-quo-wins-stalemate.html
>

You are probably right...Harmless enhancement is still probable?


> 
> Personally, in isolation, the only part of your proposal I find
> /truly/ objectionable is the support for arbitrary expressions, since
> it would tend towards encouraging suboptimal factoring. But we also

I don't quite see that as a problem. The compiler (or translator, as you 
mentioned earlier) could easily make d"sin($x$) = $sin(x)$" into
something like: ''.join(["sin(", str(x), ") = ", str(sin(x))]
which would far more efficient than calling the format() method.

Cheers,
Yingjie

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Thread

Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 00:39 -0700
  Re: string interpolation for python Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2012-04-02 11:01 +0300
  Re: string interpolation for python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-04-02 08:26 +0000
    Re: string interpolation for python Chris Angelico <rosuav@gmail.com> - 2012-04-02 18:47 +1000
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 02:11 -0700
      Re: string interpolation for python Duncan Booth <duncan.booth@invalid.invalid> - 2012-04-02 10:19 +0000
      Re: string interpolation for python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-04-02 11:54 +0000
        Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 05:40 -0700
          Re: string interpolation for python Laurent Claessens <moky.math@gmail.com> - 2012-04-02 15:02 +0200
            Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 07:25 -0700
            Re: Re: string interpolation for python Evan Driscoll <driscoll@cs.wisc.edu> - 2012-04-02 15:36 -0500
          Re: string interpolation for python mwilson@the-wire.com - 2012-04-02 10:46 -0400
            Re: string interpolation for python mwilson@the-wire.com - 2012-04-02 11:34 -0400
              Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 09:02 -0700
      Re: string interpolation for python rusi <rustompmody@gmail.com> - 2012-04-02 06:04 -0700
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 02:17 -0700
      Re: string interpolation for python alex23 <wuwei23@gmail.com> - 2012-04-02 22:47 -0700
    Re: string interpolation for python Chris Angelico <rosuav@gmail.com> - 2012-04-02 19:56 +1000
    Re: string interpolation for python Chris Rebert <clp2@rebertia.com> - 2012-04-02 03:23 -0700
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 04:46 -0700
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 05:00 -0700
    Re: string interpolation for python Chris Angelico <rosuav@gmail.com> - 2012-04-03 00:58 +1000
      Re: string interpolation for python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-04-02 18:56 +0000
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 08:49 -0700
    Re: string interpolation for python Chris Angelico <rosuav@gmail.com> - 2012-04-03 08:38 +1000
      Re: string interpolation for python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-04-02 23:18 +0000
    Re: string interpolation for python Yingjie Lan <lanyjie@yahoo.com> - 2012-04-02 18:57 -0700

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