numpy.identity(n, dtype=None)[source]¶Return the identity array.
The identity array is a square array with ones on the main diagonal.
Number of rows (and columns) in n x n output.
Data-type of the output. Defaults to float.
n x n array with its main diagonal set to one, and all other elements 0.
Examples
>>> np.identity(3)
array([[1., 0., 0.],
[0., 1., 0.],
[0., 0., 1.]])