numpy vs python speed

[ripun-jay]

WHY NUMPY IS SLOWER THEN PYTHON HERE
PLEASE LET ME KNOW

[hobovsky]

This is a very poor test which does not verify performance difference between numpy and "pure" pyton AT ALL.

[textninja]

You’re converting between data structures and depriving numpy the opportunity to make optimizations. Try this instead:

import numpy as np
a = np.arange(1000000)
%timeit b = a*3