WMI - invalid syntax error?

Tim Golden tim.golden at viacom-outdoor.co.uk
Tue Jan 3 05:15:04 EST 2006

| Sent: 30 December 2005 16:15
| To: python-list at python.org
| Subject: Re: WMI - invalid syntax error?
| py wrote:
| >Something must be happening somewhere causing it
| > to get fouled up.  I'm gonna try on a different PC.
| I tried on another PC, same problem.
| Also, I added "reload(wmi)" before I create an instance of 
| wmi.WMI just
| to see what happens, so I hve...
| import wmi
| def ppn(machine=None):
|     try:
|         reload(wmi)
|         wmiObj = wmi.WMI(machine)
|     except Exception, e:
|         print "Error: " + str(e)
| ...now I get this as the error message..
| Error: (-2147221020, 'Invalid syntax', None, None)
| Slightly different than before...but same message.

Hmmm. I think I'm now in the unusual situation of having
*too much* information to solve the problem. The thing I'm
straining for is the minimum reproducible situation. At
first it looked as though it was down to running the code
from a file rather than at the interpreter. Is that still
the case? Your previous post about the monikers suggests
that running the code twice -- in any way -- triggered
the problem. Is that true? The code above introduces the 
extra complication of a reload which I'm afraid just muddies 
the waters.

To confirm, your code above runs from a file any number
of times without issue on my (WinXP Python 2.4.2) box
using wmi 0.6b.

Behind the scenes, the wmi module is doing something
like this:

import win32com.client
x = win32com.client.GetObject ("winmgmts:")

Now if I deliberately fudge that moniker, I'll
get the error message you show above, which is
what I expected with an ill-formed moniker.

import win32com.client
x = win32com.client.GetObject ("winmgmtxx:")
# pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)

Googling for your original error code (-0x7ffbfe1c) which 
is 800401E4 in top-bit-set hex, most of the hits suggest 
that WMI is not installed on the box in question (typically 
because it's a Win98 or WinNT install without the WMI download). 
But you're on WinXP, so that can't be it.

I'm afraid I'm still mystified; it's frustrating because
I can't even reproduce the situation.


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