How to initialize Numpy array of list objects

Question

I\'m trying to create a numpy array that looks like

array([[list([]), list([])],
       [list([]), list([])],
       [list([]), list([])]], dtype=object)


        

Answer 1

You could use the following:

np.frompyfunc(list, 0, 1)(np.empty((3,2), dtype=object))  

We first turn list into a ufunc that takes no arguments and returns a single empty list, then apply it to an empty 3x2 array of object type.