Robert M said: Have you tried putting from sage.matrix.constructor
import matrix before M = matrix()?
That was a good idea! Unfortunately, it didn't work, even when trying
the file in several different directories (is that possibly what's
wrong?). I used this, and the same "matrix as global variable"
problem arose.
EXAMPLES:
Here is my only example.
sage: from DoNothing import *
sage: from sage.matrix.constructor import matrix
sage: donothing(5)
"""
M = matrix()
Interestingly, if I changed the example to try to import something
nonsensical, like
sage: from sage.matrix.constructor import jabba
then sage -t correctly tells me that I am trying to import something
nonexistent as an error, so I presume (perhaps wrongly) that matrix is
getting imported when I use the correct syntax. Nonetheless I get
this same global variable problem once I switch back to importing
'matrix' (or not importing at all).
Point of information is that I am still at 2.8.12 as I am a little
afraid of losing my notebook files with -upgrade, but I don't think
that would affect things either.
Thanks for any other ideas.
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