Is there an equivalent function of `find(A>9,1)` from matlab for numpy/scipy. I know that there is the `nonzero` function in numpy but what I need is the first index so that I can use the first index in another extracted column.

Ex: `A = [ 1 2 3 9 6 4 3 10 ]`
`find(A>9,1)` would return index `4` in matlab