need help to upload file to webserver

[Sells, Fred]

I am automating the client side of a simple web interface.  I need to upload a file to a webserver that requires authentication.  I've got the authentication working with urllib2 (see below), but the only examples I've found to upload files use httplib without authentication.  I'm competent with Python but no whiz with web api's.  Could I get a little help please.

---------the form I'm trying to simulate looks like this----------------------
<FORM action=/cgi/upload.exe method=post encType=multipart/form-data>
<INPUT type=file name=file></P>
<INPUT type=submit value=Send>
</FORM>
 
------------------my code follows---------------------------------------------
import urllib2, urllib, socket, base64, cookielib
import webtools # from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/146306
STANDARD_HEADERS = {'User-agent':'Mozilla/5.0 (compatible; MSIE 5.5; Windows NT)'}
COOKIEFILE = 'cokies.lwp'
socket.setdefaulttimeout(30)

HTTP = "http://"
HTTPS = "https://"
#IP, UNAME, PW = "............." #deleted for security
top_level_url = "http://..............."


PasswordManager = urllib2.HTTPPasswordMgrWithDefaultRealm()
PasswordManager.add_password(None, top_level_url, UNAME, PW)
AuthenticationHandler = urllib2.HTTPBasicAuthHandler(PasswordManager)
opener = urllib2.build_opener(AuthenticationHandler)
urllib2.install_opener(opener)


class MyConnection:
    def __init__(self, ipaddr="192.168.1.0", uname=None, password=None):
        self.SERVER_AND_PORT = "%s:81" % ipaddr
        self.UNAME = uname
        
        
    def getPage(self, url, kwargs, headers=None):
        headers = headers or STANDARD_HEADERS
        request = urllib2.Request(url, urllib.urlencode(kwargs), headers)
        handle = urllib2.urlopen(request)
        page = handle.read()
        handle.close()
        return  page
    
    def getValidationReportsPage(self):  ########this works
        self.getPage(HTTPS+self.SERVER_AND_PORT+"/cgi/listrpts.exe",{})
        
    def login(self): #########this works
        try:            print self.getPage(HTTPS+self.SERVER_AND_PORT+"/cgi/mainhtml.exe",{})
        except:         print 'login failed'
            
    def uploadFile(self, filepath):  #????????????? need help here
        buffer = open(filepath).read()
        headers = dict(STANDARD_HEADERS)  #make a copy
        parms = ('file', filepath, buffer )
        contenttype, body = webtools.encode_multipart_formdata([], [parms])
        headers['Content-Type']= contenttype
        data = {'file':body}
        self.getPage(HTTPS+self.SERVER_AND_PORT+"/cgi/upload.exe",data,headers)
       
          
        
def unittest():
    print 'start unittest of '+ __file__
    X = MyConnection(uname=UNAME, password=PW)
    X.login()
    X.uploadFile('testdata/MouseMds.txt')
          
if __name__ == "__main__":
    unittest()
            
 


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