Jan. 30, 2019
1:06 a.m.
I start to learn python from 《Numpy Beginner's Guide》second edition written by Ivan Idris now I know what the problem is ,the reason is that Numpy converts 2000 to an `int32`.When I use code `a=np.arange(2000, dtype='int64')**3 that you taught me, the calculation is correct thank you all ! Yuping Wang