diff --git a/TTS/api.py b/TTS/api.py
index c207cb71..31145464 100644
--- a/TTS/api.py
+++ b/TTS/api.py
@@ -12,6 +12,7 @@ from TTS.utils.manage import ModelManager
 from TTS.utils.synthesizer import Synthesizer
 from TTS.config import load_config
 
+
 class TTS(nn.Module):
     """TODO: Add voice conversion and Capacitron support."""
 
@@ -107,8 +108,12 @@ class TTS(nn.Module):
     @property
     def is_multi_lingual(self):
         # Not sure what sets this to None, but applied a fix to prevent crashing.
-        if (isinstance(self.model_name, str) and "xtts" in self.model_name or
-                self.config and ("xtts" in self.config.model or len(self.config.languages) > 1)):
+        if (
+            isinstance(self.model_name, str)
+            and "xtts" in self.model_name
+            or self.config
+            and ("xtts" in self.config.model or len(self.config.languages) > 1)
+        ):
             return True
         if hasattr(self.synthesizer.tts_model, "language_manager") and self.synthesizer.tts_model.language_manager:
             return self.synthesizer.tts_model.language_manager.num_languages > 1
diff --git a/TTS/tts/layers/xtts/trainer/gpt_trainer.py b/TTS/tts/layers/xtts/trainer/gpt_trainer.py
index 4789e1f4..61222dac 100644
--- a/TTS/tts/layers/xtts/trainer/gpt_trainer.py
+++ b/TTS/tts/layers/xtts/trainer/gpt_trainer.py
@@ -319,7 +319,7 @@ class GPTTrainer(BaseTTS):
         return self.train_step(batch, criterion)
 
     def on_train_epoch_start(self, trainer):
-        trainer.model.eval() # the whole model to eval
+        trainer.model.eval()  # the whole model to eval
         # put gpt model in training mode
         trainer.model.xtts.gpt.train()
 
diff --git a/TTS/utils/manage.py b/TTS/utils/manage.py
index bdfc2d95..35323782 100644
--- a/TTS/utils/manage.py
+++ b/TTS/utils/manage.py
@@ -27,7 +27,6 @@ LICENSE_URLS = {
 }
 
 
-
 class ModelManager(object):
     tqdm_progress = None
     """Manage TTS models defined in .models.json.
@@ -315,7 +314,7 @@ class ModelManager(object):
                     f"https://coqui.gateway.scarf.sh/hf-coqui/XTTS-v2/{model_version}/model.pth",
                     f"https://coqui.gateway.scarf.sh/hf-coqui/XTTS-v2/{model_version}/config.json",
                     f"https://coqui.gateway.scarf.sh/hf-coqui/XTTS-v2/{model_version}/vocab.json",
-                    f"https://coqui.gateway.scarf.sh/hf-coqui/XTTS-v2/{model_version}/hash.md5"
+                    f"https://coqui.gateway.scarf.sh/hf-coqui/XTTS-v2/{model_version}/hash.md5",
                 ],
             }
             print(model_item)