# convert sage complex matrix into numpy matrix

I want to convert a sage matrix with complex elements to a numpy (scipy) matrix. Then I want to manipulate the resulting matrix with commands from linalg.

I have some problem. For example consider the following lines

```
m=matrix([[I,2],[3,4]])
import numpy
npm=numpy.array(m)
from numpy import linalg
linalg.eig(npm)
```

the result is an error:

```
...
TypeError: function not supported for these types, and can't coerce safely to supported types
```

why does it not work?

('Sage Version 5.8, Release Date: 2013-03-15' on osx 10.6.8)