在Windows 10 64位计算机上，numpy数组dtype默认为int32 [英] numpy array dtype is coming as int32 by default in a windows 10 64 bit machine

问题描述

我已经在笔记本电脑上安装了Anaconda 3 64位，并在Spyder中编写了以下代码:

I have installed Anaconda 3 64 bit on my laptop and written the following code in Spyder:

import numpy.distutils.system_info as sysinfo
import numpy as np
import platform

sysinfo.platform_bits 
platform.architecture()

my_array = np.array([0,1,2,3])
my_array.dtype

这些命令的输出显示以下内容:

Output of these commands show the following:

sysinfo.platform_bits 
Out[31]: 64

platform.architecture()
Out[32]: ('64bit', 'WindowsPE')

my_array = np.array([0,1,2,3])
my_array.dtype
Out[33]: dtype('int32')

我的问题是，即使我的系统是64位的，为什么默认情况下数组类型是int32而不是int64?

My question is that even though my system is 64bit, why by default the array type is int32 instead of int64?

感谢您的帮助.

推荐答案

默认整数类型np.int_为C长:

http://docs.scipy.org/doc/numpy-1.10 .1/user/basics.types.html

但是C long在win64中是int32.

But C long is int32 in win64.

https://msdn.microsoft.com/en-us/library/9c3yd98k.aspx

这有点像win64平台.

This is kind of a weirdness of the win64 platform.

这篇关于在Windows 10 64位计算机上，numpy数组dtype默认为int32的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！