Hey everyone, I am extremely stumped on this. I have 2 functions.. def _determinant(m): return m[0][0] * m[1][1] - m[1][0] * m[0][1]
def cofactor(self): """Returns the cofactor of a matrix.""" newmatrix = [] for i, minor in enumerate(self.minors()): newmatrix.append(_determinant(minor.matrix) * ((i%2) * -1)) return newmatrix And I get the following error when I try to run a.cofactor()... "NameError: global name '_determinant' is not defined" When I put the _determinant function nested within the cofactor function it works fine. Normally I would do this, but a lot of other methods use the _determinant method. They are both in the same class, and they are at the same level, they are even in that order so I know it should be able to see it. I have a lot of functions that call other functions in this class and everything is fine. [Also for the picky, I know my cofactor method isn't mathematically correct yet ;-) ] Am I missing something obvious here? Also if it helps the rest of the code is here http://github.com/dlocpuwons/pymath/blob/d1997329e4473f8f6b5c7f11635dbd719d4a14fa/matrix.py though it is not the latest.
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