Blocked revisions 70366 via svnmerge

Blocked revisions 70366 via svnmerge

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  r70366 | eric.smith | 2009-03-14 08:29:34 -0400 (Sat, 14 Mar 2009) | 24 lines

  Merged revisions 70364 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r70364 | eric.smith | 2009-03-14 07:57:26 -0400 (Sat, 14 Mar 2009) | 17 lines

    Issue 5237, Allow auto-numbered replacement fields in str.format() strings.

    For simple uses for str.format(), this makes the typing easier. Hopfully this
    will help in the adoption of str.format().

    For example:
    'The {} is {}'.format('sky', 'blue')

    You can mix and matcth auto-numbering and named replacement fields:
    'The {} is {color}'.format('sky', color='blue')

    But you can't mix and match auto-numbering and specified numbering:
    'The {0} is {}'.format('sky', 'blue')
    ValueError: cannot switch from manual field specification to automatic field numbering

    Will port to 3.1.
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