Bug fix type=bool -> action='store_true' in argparse

tokenization_test_pytorch.py

@@ -17,7 +17,6 @@ from __future__ import division
 from __future__ import print_function
 
 import os
-import tempfile
 import unittest
 
 import tokenization_pytorch as tokenization
@@ -122,4 +121,4 @@ class TokenizationTest(unittest.TestCase):
 
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()