Returns an array of ones with the same shape and type as a given array.
Equivalent to a.copy().fill(1).
Please refer to the documentation for zeros_like.
See also
Examples
>>> a = np.array([[1, 2, 3], [4, 5, 6]])
>>> np.ones_like(a)
array([[1, 1, 1],
[1, 1, 1]])