python：如何从 HKLM 中删除注册表项（和子项）（出现错误 5）

Question

我正在尝试通过 python 脚本删除某些注册表项。
我从“HKEY_CURRENT_USER”读取和删除键没有问题，但尝试从“HKEY_LOCAL_MACHINE”执行相同操作，却出现了可怕的WindowsError: [Error 5] Access is returned。
我正在通过 IDLE IDE 运行该脚本，并具有管理员权限。
这是代码：

from _winreg import *    
ConnectRegistry(None,HKEY_LOCAL_MACHINE)
OpenKey(HKEY_LOCAL_MACHINE,r'software\wow6432node\App',0,KEY_ALL_ACCESS)
DeleteKey(OpenKey(HKEY_LOCAL_MACHINE,r'software\wow6432node'),'App')

Answer 1

您需要先删除所有子项，然后才能删除该项。

def deleteSubkey(key0, key1, key2=""):
    import _winreg
    if key2=="":
        currentkey = key1
    else:
        currentkey = key1+ "\\" +key2

    open_key = _winreg.OpenKey(key0, currentkey ,0,_winreg.KEY_ALL_ACCESS)
    infokey = _winreg.QueryInfoKey(open_key)
    for x in range(0, infokey[0]):
        #NOTE:: This code is to delete the key and all subkeys.
        #  If you just want to walk through them, then 
        #  you should pass x to EnumKey. subkey = _winreg.EnumKey(open_key, x)
        #  Deleting the subkey will change the SubKey count used by EnumKey. 
        #  We must always pass 0 to EnumKey so we 
        #  always get back the new first SubKey.
        subkey = _winreg.EnumKey(open_key, 0)
        try:
            _winreg.DeleteKey(open_key, subkey)
            print "Removed %s\\%s " % ( currentkey, subkey)
        except:
            deleteSubkey( key0, currentkey, subkey )
            # no extra delete here since each call 
            #to deleteSubkey will try to delete itself when its empty.

    _winreg.DeleteKey(open_key,"")
    open_key.Close()
    print "Removed %s" % (currentkey)
    return

这是运行它的方法：

deleteSubkey(_winreg.HKEY_CURRENT_USER, "software\\wow6432node", "App")
deleteSubkey(_winreg.HKEY_CURRENT_USER, "software\\wow6432node\\App")

Answer 2

弄清楚了！
事实证明注册表项不为空并且包含多个子项。
我必须先枚举并删除子项，然后才能从 HKLM 中删除主项。（还添加了“try... except”，这样它就不会破坏整个代码，以防出现问题）。