python：通过单个对象访问列表列表中的元素

Question

In Python, one can access an element in a 2dim numpy-array via:

matrix = numpy.array([[1,2],[3,4]])
indices = 1, 1
matrix[indices]

in this case, we can store the position of an element in the matrix within a single variable (here indices). Is there a similar thing available for a list of lists? In other word: If we cant use numpy, is there a better way than

matrix = [[1,2],[3,4]]
indices = 1, 1
matrix[indices[0]][indices[1]] # this line is ugly, isnt it?

Answer 1

Alternatively to your second example, you could use:

matrix = [[1,2],[3,4]]
fst_pos, snd_pos = 1, 1
matrix[fst_pos][snd_pos]

>>4

This way you're avoiding using the indexing of your index variable(removes unnecessary use of brackets)