On Tue, 06 May 2014 16:45:52 +0200, James Swift <ja...@3dengineer.com> wrote:
> Hi,
>
> In 3.3 I could do the following
>
> >>> "{x:s}".format(**{'x': [1, 2, 3]})
> '[1, 2, 3]'
>
> But in 3.4
>
> >>> "{x:s}".format(**{'x': [1, 2, 3]})
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> TypeError: non-empty format string passed to object.__format__
>
>
> Is this intentional?
Yes. There was a deprecation warning for this in 3.3, and it
is now an error in 3.4.
For more information, see http://bugs.python.org/issue7994.
--David
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