diff --git a/examples/nlp/dialogue_state_tracking/data/multiwoz/process_multiwoz.py b/examples/nlp/dialogue_state_tracking/data/multiwoz/process_multiwoz.py
index 263306d6affd..24db0046f6c3 100644
--- a/examples/nlp/dialogue_state_tracking/data/multiwoz/process_multiwoz.py
+++ b/examples/nlp/dialogue_state_tracking/data/multiwoz/process_multiwoz.py
@@ -505,9 +505,7 @@ def divideData(data, infold, outfold):
 
     # Check if the files exist
     if (
-        if_exist(
-            abs_target_data_dir, ['ontology.json', 'dev_dials.json', 'test_dials.json', 'train_dials.json', 'db']
-        )
+        if_exist(abs_target_data_dir, ['ontology.json', 'dev_dials.json', 'test_dials.json', 'train_dials.json', 'db'])
         and not args.overwrite_files
     ):
         print(f'Data is already processed and stored at {abs_source_data_dir}, skipping pre-processing.')
diff --git a/examples/nlp/dialogue_state_tracking/rule_based_policy_multiwoz.py b/examples/nlp/dialogue_state_tracking/rule_based_policy_multiwoz.py
index b7222b14f82e..e21c6a8cb524 100644
--- a/examples/nlp/dialogue_state_tracking/rule_based_policy_multiwoz.py
+++ b/examples/nlp/dialogue_state_tracking/rule_based_policy_multiwoz.py
@@ -35,7 +35,7 @@
 """
 
 import argparse
-from os.path import expanduser, exists
+from os.path import exists, expanduser
 
 from nemo import core as nemo_core
 from nemo.backends.pytorch.common import EncoderRNN