On Wed, 15 Dec 2004, Ron Bondy wrote:

I'm new to scipy and am trying to use it to do some tests on a 67X67 unsymmetric matrix. The matrix is a jacobian calculated in another program and I'm looking for a way to write it out as a python script so that I can import the python script and then manually invert the matrix, calc eigenvalues etc.

I'm having trouble finding a format that I can write the matrix out in.

...

From the scipy docs this is how to init a mat: A = mat('[1 3 5; 2 5 1; 2 3 8]')

As a simple example, suppose that this is the python source:

from scipy import *

bstr = '[ 1 3 5; 2 3 1 ; 3.1 5.1 8.0]' A = mat(bstr)

when I run this as a python script I get this error:

Traceback (most recent call last): File "bb.py", line 8, in ? A = mat(bstr) File "C:\Python23\Lib\site-packages\scipy_base\ppimport.py", line 115, in __call__ return self._ppimport_attr(*args,**kwds) File "C:\Python23\Lib\site-packages\Numeric\Matrix.py", line 69, in __init__ data = _convert_from_string(data) File "C:\Python23\Lib\site-packages\Numeric\Matrix.py", line 36, in _convert_from_string newrow.extend(map(_eval,temp)) File "C:\Python23\Lib\site-packages\Numeric\Matrix.py", line 24, in _eval return eval(astr.translate(_table,_todelete)) File "<string>", line 0

^ SyntaxError: unexpected EOF while parsing

why is the parser seeing an EOF?

If someone can explain to me what the problem here is I would appreciate it. I was hoping to write out the larger matrix as a string and then construct a mat object from the string.

The problem is that you have one extra space after `[' in bstr. So, try bstr = '[1 3 5; 2 3 1 ; 3.1 5.1 8.0]' mat(bstr) Similar EOF problem will occur when there would be space before `]`. I'd say its a Numeric bug. Pearu