use a list outside my loop to concatenate a url string with some list values

Im getting 3 messages from sqs queue: mapper.py, reducer.py and test.txt ...and Im storing each message inside a list.

And I want to use the content of each message in my mapper, reducer and input variables(last 3 code lines).

But outside my while loop from line where i Have print "Connecting to EMR" Im not seeing how can I use my list of filenames for the purpose I want.

Do you see any solution for this?

In my print item inside for loop it shows only the first element of filenames_list.

conn = SQSConnection()
myqueue = conn.get_queue('myQueue')
while myqueue.count() != 0:
    filenames_list = list()
    message = myqueue.read(wait_time_seconds=10)
    filename = ""
    if message is not None:
        myqueue.delete_message(message)
        filename = message.get_body()
        print
        print "Got message %s from queue" % filename
    else:
        print
        print "No message. Retrying in 10 seconds..."

    filenames_list.append(filename)


for item in files_list: 
    print item

print "Connecting to EMR"
conn = boto.emr.connect_to_region('us-east-1')
print "Creating Streaming step"
step = StreamingStep(name='Example1',

# after myFolder/ I want to put here the content of my list relative to mapper.py

mapper="s3n://myFolder/HereIWantToPutTheListContentRelatedToMapper.py",  

# after myFolder/ I want to put here the content of my list relative to reducer.py

reducer="s3n://myFolder/HereIWantToPutTheListContentRelatedToReducer.py",   

# after myFolder/ I want to put here the content of my list relative to mapper.py 
input='s3n://myFolder/HereIWantToPutTheListContentRelatedToTest.txt',  

output='s3n://myFolder/output/wordcount_output')