Why IPython is much faster than python? - 


import numpy np import time  xyz = np.random.rand(3,2399,2399) t1 = time.time() = [] _ in range(10):     a.append((xyz/np.linalg.norm(xyz, axis=0)-np.array([0,0,1])[:,np.newaxis,np.newaxis])/3) t2 = time.time() print(t2-t1)

this code. python 3 run code in 21.24s while ipython use 12.6s. magic ipython do?

python 3.6.1

ipython 5.3.0


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