inerse_matrix_gauss_jordan, Python 3

inerse_matrix_gauss_jordan

matrix = [[3, 2, 3, 3, 2, 1, 1, 2, 2, 3],   # epafksimenos (augmented) pinakas 20x10
          [2, 3, 1, 2, 1, 2, 3, 2, 2, 1],
          [2, 3, 1, 2, 1, 1, 1, 3, 2, 1],
          [1, 3, 2, 2, 1, 1, 3, 2, 1, 3],
          [3, 2, 2, 3, 1, 2, 2, 1, 1, 2],
          [2, 1, 3, 1, 2, 4, 2, 3, 2, 3],
          [3, 1, 1, 3, 3, 3, 1, 3, 1, 3],
          [3, 3, 3, 2, 1, 1, 2, 2, 2, 1],
          [3, 3, 1, 1, 1, 1, 1, 1, 3, 1],
          [1, 2, 1, 1, 3, 2, 1, 1, 2, 3],
          [1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
          [0 ,1, 0, 0, 0, 0, 0, 0, 0, 0],
          [0, 0, 1, 0, 0, 0, 0, 0, 0, 0],
          [0, 0, 0, 1, 0, 0, 0, 0, 0, 0],
          [0, 0, 0, 0, 1, 0, 0, 0, 0, 0],
          [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],
          [0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
          [0, 0, 0, 0, 0, 0, 0, 1, 0, 0],
          [0, 0, 0, 0, 0, 0, 0, 0, 1, 0],
          [0, 0, 0, 0, 0, 0, 0, 0, 0, 1]]
          
def matrix_elimination(matrix):
    # pollaplasiazoume ta stoixeia tis 1hs grammis me ton antistrofo tou protou stoixeiou
    # afairoume tin 1h grammi apo tis ipoloipes (elimination)
    # epanalamvanoume tin parapano diadikasia
    i, k, m, n = 0, 0, 0, 20
    while i < n / 2:
        j = i
        var = matrix[i][i]
        print ("var =", var)
        for e in matrix[i]:
            e = e * (1 / var)
            matrix[i][j] = e
            j = j + 1
        print ("matrix = ", matrix)    
        m = k + 1 
        while m < n / 2:
            var1 = matrix[m][i]
            k = i
            while k < n / 2:
                matrix[m][k] = matrix[m][k] - (matrix[i][k] * var1 )
                k = k + 1    
            m = m + 1      
        i = i + 1
        print ("matrix = ", matrix)
      
    return matrix
inverse_matrix = matrix_elimination(matrix)
print ("inverse_matrix =",inverse_matrix)


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