平台架构不是可靠的方法。 相反,我们:

$ arch -i386 /usr/local/bin/python2.7
Python 2.7.9 (v2.7.9:648dcafa7e5f, Dec 10 2014, 10:10:46)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform, sys
>>> platform.architecture(), sys.maxsize
(('64bit', ''), 2147483647)
>>> ^D
$ arch -x86_64 /usr/local/bin/python2.7
Python 2.7.9 (v2.7.9:648dcafa7e5f, Dec 10 2014, 10:10:46)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform, sys
>>> platform.architecture(), sys.maxsize
(('64bit', ''), 9223372036854775807)

基本上是Matthew Marshall答案的变体(使用来自std.library的struct):

import struct
print struct.calcsize("P") * 8

Platform.architecture()注释说:

注意: 在Mac OS X(也许还有其他平台)上，可执行文件可能是包含多种体系结构的通用文件。 为了获得当前解释器的“64位”，它更可靠 查询sys. xml文件。最大尺寸属性:

import sys
is_64bits = sys.maxsize > 2**32

struct.calcsize("P")返回存储单个指针所需的字节大小。在32位系统上，它将返回4个字节。在64位系统上，它将返回8个字节。

因此，如果你运行的是32位的python，则返回32;如果你运行的是64位的python，则返回64:

Python 2

import struct;print struct.calcsize("P") * 8

Python 3

import struct;print(struct.calcsize("P") * 8)

平台架构不是可靠的方法。 相反,我们:

$ arch -i386 /usr/local/bin/python2.7
Python 2.7.9 (v2.7.9:648dcafa7e5f, Dec 10 2014, 10:10:46)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform, sys
>>> platform.architecture(), sys.maxsize
(('64bit', ''), 2147483647)
>>> ^D
$ arch -x86_64 /usr/local/bin/python2.7
Python 2.7.9 (v2.7.9:648dcafa7e5f, Dec 10 2014, 10:10:46)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform, sys
>>> platform.architecture(), sys.maxsize
(('64bit', ''), 9223372036854775807)

在命令行中执行python -VV。它应该返回版本。