enqueue a mapreduce job request to an aws sqs queue

I have a method createjob() to create a map reduce job definition, where I have my input data, my mapper and reducer, this files are upladed to an s3 bucket, and Im trying to use my method enqueuejob() is called to enqueues a mapreduce job request to an aws sqs queue but this queue part its not working. Do you see why?

def enqueuejob(datafile,mapper,reducer):

    conn_sqs = boto.sqs.connect_to_region('us-east-1')
    queuename = 'testqueue'
    q = conn_sqs.get_all_queues(prefix=queuename)
    msgdict = {'datafile': datafile, 'mapper': mapper, 'reducer':reducer}
    msg = cPickle.dumps(msgdict)
    m = Message()
    m.set_body(msg)



def createjob():
    bucket = conn_s3.get_bucket('myfolder')
    key_mapper = bucket.new_key('mapper.py')
    key_reducer = bucket.new_key('reducer.py')
    key_mapper.set_contents_from_filename('mapper.py')
    key_reducer.set_contents_from_filename('reducer.py')    

    mapper="s3n://myfolder/mapper.py",
    reducer="s3n://myfolder/reducer.py",
    input='s3n://myfolder/test.txt',
    output='s3n://myfolder/output/wordcount_output',
    enqueuejob(input,mapper,reducer)