align_timit.py

import os
import subprocess

bin_path = os.path.join('montreal-forced-aligner', 'bin')
source_path = os.path.join(bin_path,  'TIMIT', 'TEST')

# generate .lab files
for dirName, subdirList, fileList in os.walk(source_path):
	for file in fileList:
		if file.endswith('.TXT'):
			# files remaining are .TXT
			# rename to .lab and edit to correct format
			with open(dirName + '/' + file) as f:
				str = ''.join(x for x in f.read() if not x.isdigit() and not x == '.')
				with open(dirName + '/' + file[:-4] + '.lab', 'w+') as w:
					w.write(str.lstrip())
		
# run montreal forced aligner on all voice files
# will run only in test files
for dialect in os.listdir(source_path):
	for speaker in os.listdir(os.path.join(source_path, dialect)):
		output = os.path.join(bin_path, 'aligned', speaker)
		os.makedirs(output, exist_ok=True)

		subprocess.run([os.path.join('./', bin_path, 'mfa_align'), os.path.join(source_path, dialect, speaker), 
										os.path.join(bin_path, 'librispeech-lexicon.txt'), 'english', output])