我在x86-64 PC上运行32位Windows。 我应该下载32位还是64位Python安装程序？

Question

I have an Intel T9550 64-bit processor with 32-bit Windows Vista. I want to install Python 2.7.1 onto my PC. From the python.org website, which installer should I use:

• "Python 2.7.1 Windows Installer"?
• or "Python 2.7.1 Windows X86-64 Installer"?

The latter one is for x86-64. I don't understand if this bit refers to the processor or the OS.

Answer 1

Answer 2

Even though you have a 64-bit processor, your OS is of a 32-bit flavour. The Windows installer for Python targets the OS it is built on, not just the processor. Since your OS is 32-bit, you can only install the regular 32-bit Python 2.7.1 Windows installer.

Note that you can install both 32-bit (under a 32-bit emulation) and x86-64 flavours of Python installer had you have Windows 64-bit on your machine.

Answer 3

The first of the two Windows installers on the download page are for 32-bit versions of the operating system.

The Windows AMD64 / Intel 64 / X86-64 description refers to 64-bit versions of Windows.

Luckily, an installer for the other 64 bit version of windows - IA64 , or Itanium - is no longer available on the download page. See for example 2.5.4 downloads : "`For Win64-Itanium users: python-2.5.4.ia64.msi"