def removeAllEdges(self):
        #Not sure why this doesn't work 
        #self.W.scale(0)
        self.W = spmatrix.ll_mat(self.getNumVertices(), self.getNumVertices())
Removes all edges from this graph.
dataset/ETHPy150Open charanpald/APGL/apgl/graph/PySparseGraph.py/PySparseGraph.removeAllEdges