两次打开同一个注册表? [英] Opens same registry twice?

问题描述

我正在尝试获取我的 Windows 计算机上所有已安装的程序，因此我读取了注册表.

I am trying to get all installed programs of my windows computer, therefore I read out the registry.

但不知何故，python 将 32 位程序读取了两次(即使我给了他另一个注册表项)

But somehow python reads the 32bit programs out twice (even though I give him another registry entry)

代码如下:

def get_programs(registry):
    reg = ConnectRegistry(None, HKEY_LOCAL_MACHINE)
    programList = []

    key = OpenKey(reg, registry)
    print(QueryInfoKey(key))
    for i in range(0, QueryInfoKey(key)[0]):
        programList.append(EnumKey(key, i))
    CloseKey(key)
    CloseKey(reg)
    return programList

我这样调用这个函数:

registry32bit = "SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall"
registry64bit = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"    
programs32bit = get_programs(registry32bit)
programs64bit = get_programs(registry64bit)

为什么python打开并读取相同的注册表(32位)两次并返回完全相同的列表?

Why does python open and read out the same registry (for 32 bit) twice and return the exactly same list?

推荐答案

这似乎有效，并在下面的评论中使用了 @eryksun 建议，关于只让重定向发生而不显式引用 Wow6432Node 注册表钥匙.中心思想是在打开卸载子项时只指定 KEY_WOW64_32KEY 或 KEY_WOW64_64KEY 标志并让魔法发生.

This appears to work and uses @eryksun suggestion in a comment below about just letting the redirection happen and not explicitly referencing the Wow6432Node registry key. The central idea is to just specify either the KEY_WOW64_32KEY or KEY_WOW64_64KEY flag when opening the uninstall subkey and let the magic happen.

注意:我还Python化了get_programs()函数中的代码.在我看来，这使它更短、更易读.

Note: I also Pythonized the code in the get_programs() function some. This made it shorter and more readable in my opinion.

import sys
from _winreg import *

# Assure registry handle objects with context manager protocol implemented.
if sys.version_info.major*10 + sys.version_info.minor < 26:
    raise AssertionError('At least Python 2.6 is required.')

def get_programs(subkey, regBitView):
    with ConnectRegistry(None, HKEY_LOCAL_MACHINE) as hive:
        with OpenKey(hive, subkey, 0, regBitView | KEY_READ) as key:
            return [EnumKey(key, i) for i in range(QueryInfoKey(key)[0])]

UNINSTALL_REG_KEY = r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall'
programs32bit = get_programs(UNINSTALL_REG_KEY, KEY_WOW64_32KEY)
programs64bit = get_programs(UNINSTALL_REG_KEY, KEY_WOW64_64KEY)

print('32-bit programs:\n{}'.format(programs32bit))
print('')
print('64-bit programs:\n{}'.format(programs64bit))

非常感谢@eryksun 提供的线索和许多实施策略建议.

Many thanks to @eryksun for the clues and many implementation strategy suggestions.

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