Python 在 64 位 Vista 上获得 os.environ ["ProgramFiles"] 的错误值

Question

Vista64 机器上的 Python 2.4.3。

环境中有以下2个变量:

ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)

但是当我运行以下命令时

import os
print os.environ["ProgramFiles"]
print os.environ["ProgramFiles(x86)"]

我得到:

C:\Program Files (x86)
C:\Program Files (x86)

知道如何获得“ProgramFiles”的正确值吗？

Answer 1

来自Wikipedia page :

%ProgramFiles%

This variable points to Program Files directory, which stores all the installed program of Windows and others. The default on English-language systems is C:\Program Files. In 64-bit editions of Windows (XP, 2003, Vista), there are also %ProgramFiles(x86)% which defaults to C:\Program Files (x86) and %ProgramW6432% which defaults to C:\Program Files. The %ProgramFiles% itself depends on whether the process requesting the environment variable is itself 32-bit or 64-bit (this is caused by Windows-on-Windows 64-bit redirection).

因此，为了仅获取 C:\Program Files，您显然需要检查 %ProgramW6432%。