Re: get registry with WMI in Python

[Matthew Sherborne]

Hi Steven,

Here's a lower level way of doing it in python.
---------
from win32api import *
from win32con import *

root = RegOpenKeyEx(HKEY_LOCAL_MACHINE, 'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', 0, KEY_READ)
try:
    keys = []
    ok = 1
    i = 0
    while ok:
        try:
            keys.append(RegEnumKey(root, i))
        except:
            ok = 0
        i += 1
finally:
    RegCloseKey(root)

print keys
---------

What's happening in your code is, the COM function is expecting an array passed by reference that it can fill with the data. Python normally deals with such calls by returning the array  like it was part of the function, so you code would be something like:

iRC, sKeys = objRegi.EnumKey(HKLM, sBaseKey)

But I think you need to run the COM makePy Utility found in the tools menu of the ActiveState win IDE on the COM object before you can do that. Unfortunately I don't know how if or under what name that COM object is registered, so I couldn't do it.

In the activestate help look up win32api in the index. And search for python examples on the net rather than VB examples which can be hard to translate. There are plenty around.

GBU
Matthew Sherborne

Steven Nien wrote:

Hi

I find some scripts in Microsoft MSDN. For example:

HostName="localhost"

Dim oRegistry, sBaseKey, iRC, sKey, arSubKeys, sValue

Const HKLM = &H80000002 'HKEY_LOCAL_MACHINE

On Error Resume Next

Set oRegistry = _
GetObject("winmgmts:{ImpersonationLevel=Impersonate}//" & _
HostName & "/root/default:StdRegProv")

If Err <> 0 Then
  wscript.echo "Line 9, " & Err.Number & ", " & _
  Err.Description
  Err.Clear
  wscript.quit
End if

sBaseKey = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\"

iRC = oRegistry.EnumKey(HKLM, sBaseKey, arSubKeys)
If Err <> 0 Then
  wscript.echo "Line 23, " & Err.Number & ", " & _
  Err.Description
  Err.Clear
  wscript.quit
End if

For Each sKey In arSubKeys
  iRC = oRegistry.GetStringValue(HKLM, sBaseKey & sKey, _
  "DisplayName",sValue)
   If Err <> 0 Then
      wscript.echo "Line 32, " & Err.Number & ", " & _
      Err.Description
      Err.Clear
      wscript.quit
   End if

  If iRC <> 0 Then
    oRegistry.GetStringValue HKLM, sBaseKey & _
    sKey, "QuietDisplayName", sValue
    
    If Err <> 0 Then
       wscript.echo "Line 42, " & Err.Number & ", " & _
       Err.Description
       Err.Clear
       wscript.quit
    End if
  End If

  If sValue <> "" Then
    wscript.echo sValue
  End If
Next

After run the script, I can get Uninstall software list in registry.
I try to do it with Python. The code is:

from win32com.client import GetObject

HKLM = 0x80000002L
objRegi = GetObject("winmgmts://./root/default:StdRegProv")
sBaseKey = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"
iRC = objRegi.EnumKey(HKLM, sBaseKey, sKeys)
for sKey in arSubKeys:
    print sKey

After run the code, I get some error message:

Traceback (most recent call last):
  File "D:\steven\itim\t2.py", line 6, in ?
    iRC = objRegi.EnumKey(HKLM, sBaseKey, sKeys)
NameError: name 'sKeys' is not defined

I don't know why. Could someone give me a hint?
Thanks very much.

--
Steven Nien

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