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Re: What is this syntax ?

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Le 19/06/2011 15:41, candide a écrit :
> With Python 2.7 :
>
>   >>>  x="foo"
>   >>>  print '"'+x+'"'
> "foo"
>   >>>
>
>
> What is this curious syntax on line 2 ? Where is it documented ?

When you want to have an explicit double quote " in a string, you put in 
between single quote '.
(and vice versa)

So here you have the string
'"'
which is "
then
+x
(add x)
then
+'"'

Try also

 >>> print "'"
'
 >>> print "'"
"

Laurent

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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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