python実装Gauss反復法

#Gauss          mx、   mr、    n( list        )
def Gauss(mx,mr,n=100):
    if len(mx) == len(mr):  # mx mr                
        x = [] #            0  
        for i in range(len(mr)):
            x.append([0])
        count = 0 #      
        while count < n:
            for i in range(len(x)):
                nxi = mr[i][0]
                for j in range(len(mx[i])):
                    if j!=i:
                        nxi = nxi+(-mx[i][j])*x[j][0]
                nxi = nxi/mx[i][i]
                x[i][0] = nxi
            count = count + 1
        return x 
    else:
        return False

#   Gauss(mx,mr,n=100)   
    

mx = [[8,-3,2],[4,11,-1],[6,3,12]]
mr = [[20],[33],[36]]
print(Gauss(mx,mr,20))