brandon.bar...@gmail.com wrote:
> Hello, I tried the following on sagenb.org  (sage version 4.2):
> 
> http://sagenb.org/home/pub/1012/
> 
> In essence, the problem is as follows:
> ...
> #Make symbolic
> J00=Matrix(SR,J00)
> J00
> 
> [-1  s]
> [-1  0]
> 
> J00.eigenmatrix_right()
>
 > ...
>
> TypeError: degree() takes exactly one argument (0 given)

This is ticket #6934, I believe:

   http://trac.sagemath.org/sage_trac/ticket/6934


> Is there a sensible workaround?

Probably not what you had in mind, but I keep an older (unaffected) 
version around and use that.

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