Traceback (most recent call last):

 "<stdin>", line 1, in ?

 "/usr/lib/python2.4/site-packages/scipy/signal/signaltools.py", line 1056, in residue
k,b = polydiv(b,a)

 "/usr/lib/python2.4/site-packages/numpy/lib/polynomial.py", line 401, in polydiv
q = NX.zeros((m-n+1,), float)ValueError: negative dimensions are not allowed
Traceback (most recent call last):

 "<stdin>", line 1, in <module>

 "psutil/__init__.py", line 427
except OSError, err:
^SyntaxError: invalid syntax 