How to create identity matrix with numpy

Question

How do I create an identity matrix with numpy? Is there a simpler syntax than

numpy.matrix(numpy.identity(n))

Answer 1

Here's a simpler syntax:

np.matlib.identity(n)

And here's an even simpler syntax that runs much faster:

In [1]: n = 1000
In [2]: timeit np.matlib.identity(n)
100 loops, best of 3: 8.78 ms per loop
In [3]: timeit np.matlib.eye(n)
1000 loops, best of 3: 695 us per loop