How do I use matrix (or Matrix?) inside python files which are
compiled? Suppose I have a file:
def my_matrix(d):
return Matrix(ZZ,d,d,[ [i+j for i in range(d)] for j in range(d)])
I include it in my favorite directory, and compile SAGE, and run:
sage: my_matrix(3)
---------------------------------------------------------------------------
<type 'exceptions.NameError'> Traceback (most recent call
last)
/home/jvoight/sage/devel/sage-main/sage/rings/number_field/<ipython
console> in <module>()
/home/jvoight/sage/local/lib/python2.5/site-packages/sage/rings/
number_field/hot.py in my_matrix(d)
1 def my_matrix(d):
----> 2 return Matrix(ZZ,d,d,[ [i+j for i in range(d)] for j in
range(d)])
<type 'exceptions.NameError'>: global name 'Matrix' is not defined
In other situations, I type ?foo to see where I need to import foo
from. I can't figure that out with Matrix! I tried various
combinations, but I thought I would just ask: What is the officially
correct way to do this?
Thanks, JV
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