I have an array where I record hits

` a=np.zeros(5) `

and an array with the indices of the hits, for example I have 2 hits on index 2

` hits=np.array([2,2]) `

so I want to increase index 2 of a by 2

I tried:

` a[hits]+=1 `

but it gives array([ 0., 0., 1., 0., 0.])

does someone have a suggestion?

` bins=np.bincount(hits) `

a[:len(bins)] += bins

a

array([ 0., 0., 2., 0., 0.])