Tnt tagging through python

From my previous post, I hope all of you know how to do tagging using TnT tagger. To tag a file called test_file by the model tagged_file can be done by following command in terminal

$ ./tnt tagged_file test_file
And if we want to save the tagged file, attempt following cammand instead of above
$ ./tnt tagged_file test_file > output.txt

Here is an another way to tag test_file using via python code, here the tagged output can be stored in another file for future reference as above. Add the following lines to python script

import os

executable = '/home/ajuna/components/tnt/tnt' #path to tnt folder

tnt_model = '/home/ajuna/components/tnt/tagged_file' #path to model named tagged_file 

def run_tnt(input='tokenized_file', output='taggedoutput.txt'):

     "call tnt from Linux"

     tnt_command = '%s %s %s > %s' % (tnt_executable, tnt_model, input, output)     

     os.system(tnt_command)

run_tnt('tagged_file', 'output.txt')

#here tagged_file is the input file to be tagged (which contains words), and output.txt is the file where output to be saved(words with tag after running TnT tagger)