(self, i, j)
return root
This is a method just to generate roots
        with a -1 in the ith position and a 1
        in the jth postion.
This is a method just to generate roots
        with a -1 in the ith position and a 1
        in the jth postion.
This is a method just to generate roots with a - 1 in the ith position and a 1 in the jth postion .
def basic_root(self, i, j):
        """
        This is a method just to generate roots
        with a -1 in the ith position and a 1
        in the jth postion.

        """

        root = [0]*8
        root[i] = -1
        root[j] = 1
        return root
def basic_root ( self , i , j ) : root = [ 0 ] * 8 root [ i ] = - 1 root [ j ] = 1 return root