How Can I Calculate The Ratio Of A Value In Array To The Sum Of Array In Python?

I have an array such as this: array =[[1,2,3], [5,3,4], [6,7,2]] and for each member I would like to calculate the ratio of them to the sum of the row. Therefore,

Solution 1:

You can specify keepdim=True while doing the sum, and then you have a 2d array as result while each row stands for the row sum:

array = np.array([[1,2,3],
        [5,3,4],
        [6,7,2.]])

array/array.sum(1, keepdims=True)
#array([[ 0.16666667,  0.33333333,  0.5       ],
#       [ 0.41666667,  0.25      ,  0.33333333],
#       [ 0.4       ,  0.46666667,  0.13333333]])