[Numpy-discussion] Numpy-discussion

Kirit Thadaka kirit.thadaka at gmail.com
Tue Jan 29 03:00:50 EST 2019

You are seeing negative numbers because of an overflow beyond 32 bits. Change the type of your np array to int64 using a = (np.arange(2000) ** 3).astype(np.int64) and you won’t see negative numbers. I assume you are running this code on a 32 bit machine which is why Numpy is defaulting to int32. On a 64 bit machine it defaults to int64.

Hope this helps.

> On Jan 28, 2019, at 11:22 PM, Yuping Wang <wyupinghhu at 163.com> wrote:
> Dear Nmupy developers and users:
>         I am a new user of Numpy ,I have encountered a question about Numpy recently, which need your help. The question is below:
>           <捕获.JPG>
>      I don  know why there are negative numbers 
>      can somebody explain to me why these happens
>     Thanks in advance! 
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