diff --git a/TTS/tts/datasets/dataset.py b/TTS/tts/datasets/dataset.py
index 60b514c2..337dcfa5 100644
--- a/TTS/tts/datasets/dataset.py
+++ b/TTS/tts/datasets/dataset.py
@@ -258,7 +258,7 @@ class TTSDataset(Dataset):
         return audio_lengths, text_lengths
 
     @staticmethod
-    def sort_and_filter_by_length(lengths:List[int], min_len:int, max_len:int):
+    def sort_and_filter_by_length(lengths: List[int], min_len: int, max_len: int):
         idxs = np.argsort(lengths)  # ascending order
         ignore_idx = []
         keep_idx = []
@@ -271,7 +271,7 @@ class TTSDataset(Dataset):
         return ignore_idx, keep_idx
 
     @staticmethod
-    def create_buckets(samples, batch_group_size:int):
+    def create_buckets(samples, batch_group_size: int):
         for i in range(len(samples) // batch_group_size):
             offset = i * batch_group_size
             end_offset = offset + batch_group_size
@@ -286,8 +286,12 @@ class TTSDataset(Dataset):
         """
 
         # sort items based on the sequence length in ascending order
-        text_ignore_idx, text_keep_idx = self.sort_and_filter_by_length(self.text_lengths, self.min_text_len, self.max_text_len)
-        audio_ignore_idx, audio_keep_idx = self.sort_and_filter_by_length(self.audio_lengths, self.min_audio_len, self.max_audio_len)
+        text_ignore_idx, text_keep_idx = self.sort_and_filter_by_length(
+            self.text_lengths, self.min_text_len, self.max_text_len
+        )
+        audio_ignore_idx, audio_keep_idx = self.sort_and_filter_by_length(
+            self.audio_lengths, self.min_audio_len, self.max_audio_len
+        )
         keep_idx = list(set(audio_keep_idx) | set(text_keep_idx))
         ignore_idx = list(set(audio_ignore_idx) | set(text_ignore_idx))
 
diff --git a/TTS/tts/utils/text/characters.py b/TTS/tts/utils/text/characters.py
index f9c44a7d..24ce51f1 100644
--- a/TTS/tts/utils/text/characters.py
+++ b/TTS/tts/utils/text/characters.py
@@ -209,7 +209,7 @@ class BaseCharacters:
             ), f" [!] There are duplicate characters in the character set. {set([x for x in self.vocab if self.vocab.count(x) > 1])}"
 
     def char_to_id(self, char: str) -> int:
-            return self._char_to_id[char]
+        return self._char_to_id[char]
 
     def id_to_char(self, idx: int) -> str:
         return self._id_to_char[idx]
@@ -298,8 +298,8 @@ class IPAPhonemes(BaseCharacters):
             )
         else:
             return IPAPhonemes(
-            **config.characters if config.characters is not None else {},
-        )
+                **config.characters if config.characters is not None else {},
+            )
 
 
 class Graphemes(BaseCharacters):
diff --git a/TTS/tts/utils/text/phonemizers/__init__.py b/TTS/tts/utils/text/phonemizers/__init__.py
index b00f7f5e..0da5875e 100644
--- a/TTS/tts/utils/text/phonemizers/__init__.py
+++ b/TTS/tts/utils/text/phonemizers/__init__.py
@@ -52,4 +52,4 @@ def get_phonemizer_by_name(name: str, **kwargs) -> BasePhonemizer:
 
 
 if __name__ == "__main__":
-    print(DEF_LANG_TO_PHONEMIZER)
\ No newline at end of file
+    print(DEF_LANG_TO_PHONEMIZER)