Replace a slice

nd1[0:2,0:2]=nd2[-2:,2:4]

"""Creating NumPy arrays."""
import numpy as np

def test_run():
	print np.array([(2, 3, 4),(5, 6, 7)])

if __name__ == "__main__":
	test_run()

"""Creating NumPy arrays."""
import numpy as np

def test_run():
	print np.empty(5)
	print np.empty((5,4,3))

if __name__ == "__main__":
	test_run()

import numpy as np

def test_run():
	print np.ones((5, 4), dtype=np.int_)

if __name__ == "__main__":
	test_run()