check for identical rows in different numpy arrays

Question

how do I get a row-wise comparison between two arrays, in the result of a row-wise true/false array?

Given datas:

a = np.array([[1,0],[2,0],[3,1],[         


        

Answer 1

You can do it as a list comp via:

c = np.array([row in b for row in a])

though this approach will be slower than a pure numpy approach (if it exists).