[issue9139] Add examples for str.format()

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

I’m not sure it’s good style to say “now” twice (in the versionchanged block).

I almost feel bad pointing that there is one line with bad whitespace:
+   >>> for align,text in ...
(Space after comma)

Otherwise great patch :)

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resolution:  -> accepted

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9139>
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