Convert to Python List type variable from MATLAB code? Type convert error : List list indices must be integers or slices, not tuple

Question

MATLAB

BS = {};
Ksize = 2;
[value,index] = max(BSpar(:));
[r, c] = find(BSpar == value);

    for i = 1:K
            for j=1:K
                block =BS{r,c}((i-1)*Ksize+1:i*Ksize,(j-1)*Ksize+1:j*Ksize);

Python

BS = [];
Ksize = 2;
value = max(np.ravel(BSpar))
r, c= find(BSpar == value, nargout=2)
for i in range(K):
    for j in range(K):
        block = BS[r,c][i * Ksize:(i+1)*Ksize, j * Ksize:(j + 1) * Ksize]

Error:

List indices must be integer or slices , not tuple.