Python: Send A Letter With SendLetterAndAddress()

"""
A simple script to send a sample letter using the 
PostalMethods SendLetterAndAddress SOAP API call.
You must set your SOAP client with a reference to 
the PostalMethods Web Service: 
$ wsdl2py --url https://api.postalmethods.com/2009-02-26/PostalWS.asmx?WSDL 
Detailed instructions available in the Python samples zip file
"""
 
from postalmethods import client
 
print 'Testing SendLetterAndAddress...'
c = client.PmClient('USERNAME','PASSWORD',workMode="Default")
filename = "SampleLetter.pdf"
result = c.sendLetterAndAddress(filename,'Sending a letter using Python',
                                'George Washington',          # attionLine1
                                '',                           # attentionLine2,
                                'The White House',            # company
                                '1600 Pennsylvania Ave NW',   # address1
                                '',                           # address2,
                                'Washington',                 # city
                                'DC',                         # state
                                '20500',                      # postalCode
                                'United States of America')   # country
print '   Letter was sent with result code: %d' % result
 
"""
A positive value means the message was successfully queued for processing.
The PostalMethods Letter ID is returned.
 
A negative value means an error occurred.
See the PostalMethods Status Codes: http://www.postalmethods.com/statuscodes#webservice.
"""