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
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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.
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