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Sun May 7 14:47:05 CEST 2006 · https://mail.python.org/pipermail/python-dev/2006-May/064926.html

Talin wrote:
>      Braces can be escaped using a backslash:
> 
>          "My name is {0} :-\{\}".format('Fred')
> 
>      Which would produce:
> 
>          "My name is Fred :-{}"

Do backslashes also need to be backslashed then?  If not, then what is 
the translation of this:?

     r'abc\{%s\}' % 'x'

I guess the only sensible translation if backslashes aren't backslashed 
would be:

     r'abc\\{{0}\\}'.format('x')

But the parsing of that format string seems fairly unintuitive to me. 
If backslashes do need to be backslashed, then that fact needs to be 
mentioned.

-Edward

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[Python-Dev] PEP 3101 Update