2010/3/23 Vincent Delecroix <20100.delecr...@gmail.com>:
> Hi,
>
> I tried the following and get an unexpected error
>
> {{{
> sage: s = WordMorphism({'a1': ['a1','a2'], 'a2':['a1']})
> sage: s.fixed_point('a1')
> Traceback
> ...
> KeyError: 'a'
> }}}
>
> and it does the same for tuples
>
> {{{
> sage: s = WordMorphism({('a', 1) : [('a', 1), ('a', 2)], ('a', 2) : [('a',
> 1)]})
> sage: s.fixed_point(('a', 1))
> Traceback
> ...
> KeyError: 'a'
> }}}
>
> Is it a bug or not the right way to do ?
It is a bug. I think I can fix it easily.
Sébastien
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