how do I register a local-server-only COM object in Python?

[Dave Dench]

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Dear All,
just getting back into the swing of things after a long absence....
so probably a newbie error.
I am trying out the "old" spamserver_GPO demo. ( code attached )
The original Spamserver demo works , but this latest code demo
doesn't. It registers the server and can be seen running in the COM browser,
but fails with a 
"**** - The Python.SpamServer test server is not available"
when using the /test option.
Anyone know what the problem is ?
I am running 1.6 on an NT machine ( but via winframe from a Unix box ).
	Best wishes to all.
	David

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  	         ********************************************************
                 *     David Dench                          		*
                 *     School of Computing & Mathematics    		*
                 *     The University of Huddersfield       		*
                 *     Tel:  01484  472083	     			*
                 *     email: d.j.dench at hud.ac.uk   	 		*
    		 *     web:   http://helios.hud.ac.uk/staff/scomdjd	*
                 ********************************************************
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# copyright Andy Robinson 1997
# you may freely modify and reuse this under the same terms
# as the main python licence

# registration stuff modified and expanded by Harri Pasanen
# thanks also to Mark Hammond and Greg Stein

# modified 7/8/99 to demonstrate having all clients on a
# machine work with the same SpamServer data. 
# Gordon McMillan

from win32com.server.exception import COMException
import win32com.server.util
import win32com.client.dynamic
import sys
import pythoncom

_cans = None

class SpamServer:
    _reg_clsid_ = "{1CCF96CE-8BA9-11D4-A059-0008C79FF681}"
    _reg_desc_ = "Python SpamServer GPO"
    _reg_progid_ = "Python.SpamServerGPO"
    _reg_class_spec_ = "spamserver_GPO.SpamServer"
    _reg_clsctx_ = pythoncom.CLSCTX_LOCAL_SERVER
    _public_methods_ = ['AddCan',
                            'GetCanCount',
                            'GetCanAt',
                            'DeleteCan',
                            'GetDescriptionList',
                            'GetCrosstab']
    # you need to explicitly list the public methods for COM to work
    # spelling errors here lead to errors when you call CreateObject
    # from a client
    
    def __init__(self):
        "it keeps a collection of data - start with a sample object"
        global _cans
        if _cans is None:
            _cans = [SpamCan()]
        self.cans = _cans
        
    def GetCanCount(self):
        "return the number of objects held"
        return len(self.cans)
        
    def AddCan(self, contents = 'Spam', type = 'Can', qty = 3):
        "two uses, can just add a generic one, or one you created in a GUI"
        newOne = SpamCan()
        newOne.contents = contents
        newOne.type = type
        newOne.qty = qty
        self.cans.append(newOne) 			
        
    def DeleteCan(self,index):
        del self.cans[index]
        
    def GetCanAt(self, index):
        return win32com.server.util.wrap(self.cans[index])
        
    def GetDescriptionList(self):
            # for a list view
        return map(lambda x:x.GetDescription(), self.cans)
        
    def GetCrosstab(self):
            # some example data for yout to play with
        return [['e.g.','cans','bottles','bags'],
                ['spam',5,4,3],
                ['spinach',0,1,2],
                ['beer',12,4,2]]
        
class SpamCan:
    "just a simple 'packet' of data to play with"
    _public_methods_ = ['GetDescription']
    _public_attrs_ = ['contents','type','qty']
    
    def __init__(self):
        self.contents = 'spam'
        self.type = 'can'
        self.qty = 3
        
    def GetDescription(self):
        return '%d %ss of %s' %(self.qty, self.type, self.contents)
        
# each class needs a class ID.  You can get these by typing:
#	import pythoncom
#	g = pythoncom.CreateGuid()
#	print g
# in the interactive window, then pasting it into your code.
        
def RegisterSpam():
    # register them both - this must be called once for the
    # demo to work
    import win32com.server.register
    win32com.server.register.UseCommandLine(SpamServer)
    
def UnRegisterSpam():
    """ Unregister each server - use this before 
    deleting the server to keep your registr tidy"""
    
    print "Unregistering COM server..."
    from win32com.server.register import UnregisterServer
    UnregisterServer(SpamServer._reg_clsid_ ,
                   "{1CCF96CE-8BA9-11D4-A059-0008C79FF681}")
    print "SpamServer Class unregistered."

    # and finally some test code
    
def TestDirect():
    # does some stuff to verify the class works IN PYTHON
    s = SpamServer()
    print 'Created spam server'
    s.AddCan('Cheese', 'Sandwich', 2)
    print 'added 2 cheese sandwiches'
    s.AddCan('Chimay Rouge', 'Bottle', 6)
    print 'added some strong beer'
    print 'contains %d items:' % (s.GetCanCount())
    for item in s.GetDescriptionList():
        print '\t' + item
    s.DeleteCan(0)
    print 'ditched the beer, we are at work here!'
    print 'Tests passed'
    
def TestCOM():
    try:
        #SpamSrv = win32com.client.dynamic.Dispatch("Python.SpamServerGPO")
        SpamSrv = win32com.client.Dispatch("Python.SpamServerGPO",clsctx=pythoncom.CLSCTX_LOCAL_SERVER)

        print 'Python.SpamServerGPO class created from COM'
    except:
        print "**** - The Python.SpamServer test server is not available"
        return
    print 'cans:', SpamSrv.GetCanCount()
    print 'Adding a cheese sandwich', SpamSrv.AddCan('Cheese', 'Sandwich', 2)
    print 'Adding some beer:', SpamSrv.AddCan('Chimay Rouge', 'Bottle', 6)
    print 'cans: ', SpamSrv.GetCanCount()
    descr = SpamSrv.GetDescriptionList()
    for item in descr:
        print item
    print "The Python.Spamserver COM Server worked OK."
    
    
if __name__=='__main__':
    """If they ran the whole script, register classes.
    Options also given to unregister and to test"""
    import sys
    if "/unreg" in sys.argv:
        UnRegisterSpam()
    elif "/test" in sys.argv:
        print "doing direct tests..."
        TestDirect()
        print "testing COM"
        TestCOM()
    else:
        RegisterSpam()