为什么 Python 2.7 AMD 64 安装程序似乎在 32 位模式下运行 Python? [英] Why does the Python 2.7 AMD 64 installer seem to run Python in 32 bit mode?

问题描述

我已经从 python.org 的 python-2.7.amd64.msi 包安装了 Python 2.7.它可以正确安装和运行，但似乎处于 32 位模式，尽管安装程序是 64 位安装程序.

I've installed Python 2.7 from the python-2.7.amd64.msi package from python.org. It installs and runs correctly, but seems to be in 32-bit mode, despite the fact that the installer was a 64 bit installer.

Python 2.7 (r27:82525, Jul  4 2010, 07:43:08) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, platform
>>> platform.architecture()
('64bit', 'WindowsPE')
>>> sys.maxint
2147483647

我该怎么做才能安装 Python 使其真正在 64 位模式下运行?

What can I do to install Python so that it actually runs in 64-bit mode?

推荐答案

查看讨论 此处.它来自 2.6.1，但似乎仍然适用.至少，我在任何地方都没有看到相反的证据.事情的要点(引自该链接)是:

See the discussion here. It's from 2.6.1, but it seems to still apply. I haven't seen evidence to the contrary anywhere, at least. The gist of the matter (quoted from that link) is:

这是设计使然.在他们的不定式智慧中，微软决定使long"C 类型始终为 32 位有符号整数 - 即使在 64 位上系统.在大多数 Unix 系统上，long 至少为 32 位，但通常大小(ptr).

This is by design. In their infinitive wisdom Microsoft has decided to make the 'long' C type always a 32 bit signed integer - even on 64bit systems. On most Unix systems a long is at least 32 bit but usually sizeof(ptr).

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