[python-win32] Python COM server throws 'module' object has no attribute 'VARIANT'

[Paul Hemans]

Hi Mark,
Thanks for the response.

Here is what I am using to instantiate the server through python
>>>  from comtypes.client import CreateObject
>>>  cc=  CreateObject("Compy.Connect")
>>>  cc.Status()

The com server also fails when being accessed from vbscript.
I have verified that both machines have comtypes 0.6.2 loaded.

Win32com works on the same machine that comtypes works
>>> import win32com.client
>>> wcc = win32com.client.Dispatch("Compy.Connect")
>>> wcc.Status()

When I run this on the machine that fails with comtypes I get:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<COMObject Compy.Connect>", line 2, in Status
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, u'Python COM
Server Internal Error', u"Unexpected Python Error: AttributeError: 'module'
object has no attribute 'VARIANT'\n", None, 0, -2147467259), None)

Do you have any suggestions as to what I can test?

Thanks,
Paul

On Mon, Aug 6, 2012 at 11:41 AM, Mark Hammond <skippy.hammond at gmail.com>wrote:

> I don't quite understand this code.  The server is using win32com (ie, not
> comtypes), but the client code seems to be using comtypes rather than
> win32com (but it's hard to tell as the client code is missing the imports
> etc).  But at face value it appears one of the machines might have an older
> version of comtypes installed.
>
> Mark
>
>
> On 5/08/2012 11:13 PM, Paul Hemans wrote:
>
>> Can someone tell me what is going wrong. The following works on one
>> machine but not on another.
>>
>> Here is a COM server implemented in Python:
>>
>> |from  win32com.server.**exceptionimport  COMException
>>
>>
>> import  pythoncom
>>
>> import  sys
>>
>> import  os
>>
>> from  string  import  Template
>>
>> import  logging
>>
>> import  logging.config
>>
>>
>> class  Connector:
>>
>>      _reg_clsctx_=  pythoncom.CLSCTX_LOCAL_SERVER
>>
>>      _reg_clsid_=  "{0CE25AEB-1AFA-4DA7-97BD-**F93CDBFB376C}"
>>
>>      _reg_desc_=  "Python Test COM Server"
>>
>>      _reg_progid_=  "Compy.Connect"
>>
>>      _public_methods_=  ['Process',  'Status']
>>
>>      _public_attrs_=  []
>>
>>      _readonly_attrs_=  []
>>
>>
>>      def  Process(self,  what):
>>
>>          pass
>>
>>
>>      def  Status(self):
>>
>>          return  Template("""
>>
>>          Current Directory: $dir
>>          Installed: $script
>>          PythonPATH: $pyPath
>>          """).substitute(dir=  os.getcwd(),
>>
>>                          script=  os.path.abspath(__file__),
>>
>>                          pyPath=  sys.path)
>>
>>
>> if  __name__==  '__main__':
>>
>>
>>      import  win32com.server.register
>>
>>      win32com.server.register.**UseCommandLine(Connector)
>>
>> |
>>
>> It registers ok. When it is run it causes the following to occur on the
>> production machine but NOT on the development box:
>>
>> |>>>  cc=  CreateObject("Compy.Connect")
>>
>>
>>   cc.Status()
>>>>>
>>>>
>> Traceback  (most recent calllast):
>>
>>    File  "<stdin>",  line1,  in  <module>
>>
>>    File  "C:\Python26\lib\site-**packages\comtypes\client\**dynamic.py",
>>  line42,  in  _
>>
>> _call__
>>      return  self._obj._comobj.Invoke(self.**_id,  *args)
>>
>>    File  "C:\Python26\lib\site-**packages\comtypes\automation.**py",
>>  line717,  in  Invo
>>
>>
>> ke
>> raise  COMError(hresult,  text,  details)
>>
>> _ctypes.COMError:  (-2147352567,  'Exception occurred.',  (u"Unexpected
>> Python Erro
>>
>> r: AttributeError: 'module' object has no attribute 'VARIANT'\n",
>>  u'Python COM S
>>
>> erver Internal Error',  None,  0L,  -2147467259))
>>
>>
>>>>>
>> |
>>
>> I have installed comtypes 0.6.2. Running Python 2.6.6
>>
>>
>>
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>>
>>
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>



-- 
Best regards,
Paul Hemans

paul_hemans at laberg.com.au

LABERG Pty Ltd
(02) 4889 9441

www.laberg.com.au
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