diff --git a/.gitignore b/.gitignore
index 22f52c8..fe8824b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ venv/
 dist/
 .coverage
 .ipynb_checkpoints/
+.ruff_cache/
 
 /Data/
 /model_assets/
diff --git a/pyproject.toml b/pyproject.toml
index 870c3b2..e8c218d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,6 +72,23 @@ cov = [
     "cov-report",
 ]
 
+[tool.hatch.envs.style]
+detached = true
+dependencies = [
+  "black",
+  "isort",
+]
+[tool.hatch.envs.style.scripts]
+check = [
+  "black --check --diff .",
+  "isort --check-only --diff --profile black --gitignore --lai 2 .",
+]
+fmt = [
+  "black .",
+  "isort --profile black --gitignore --lai 2 .",
+  "check",
+]
+
 [[tool.hatch.envs.test.matrix]]
 python = ["3.9", "3.10", "3.11"]
 
diff --git a/resample.py b/resample.py
index b63c64a..5c3cc79 100644
--- a/resample.py
+++ b/resample.py
@@ -1,6 +1,7 @@
 import argparse
 import os
 from concurrent.futures import ThreadPoolExecutor
+from multiprocessing import cpu_count
 
 import librosa
 import pyloudnorm as pyln
diff --git a/server_fastapi.py b/server_fastapi.py
index 49e85ac..f3d3c94 100644
--- a/server_fastapi.py
+++ b/server_fastapi.py
@@ -8,7 +8,7 @@ import os
 import sys
 from io import BytesIO
 from pathlib import Path
-from typing import Optional, Any
+from typing import Any, Optional
 from urllib.parse import unquote
 
 import GPUtil
diff --git a/slice.py b/slice.py
index 99fac19..4a86a3d 100644
--- a/slice.py
+++ b/slice.py
@@ -1,5 +1,4 @@
 import argparse
-import os
 import shutil
 from pathlib import Path
 
diff --git a/style_gen.py b/style_gen.py
index b22292d..384319a 100644
--- a/style_gen.py
+++ b/style_gen.py
@@ -6,6 +6,7 @@ from typing import Any
 import numpy as np
 import torch
 from numpy.typing import NDArray
+from pyannote.audio import Inference, Model
 from tqdm import tqdm
 
 from config import config
@@ -13,8 +14,6 @@ from style_bert_vits2.logging import logger
 from style_bert_vits2.models.hyper_parameters import HyperParameters
 from style_bert_vits2.utils.stdout_wrapper import SAFE_STDOUT
 
-warnings.filterwarnings("ignore", category=UserWarning)
-from pyannote.audio import Inference, Model
 
 model = Model.from_pretrained("pyannote/wespeaker-voxceleb-resnet34-LM")
 inference = Inference(model, window="whole")
diff --git a/train_ms.py b/train_ms.py
index c1a392e..c2538da 100644
--- a/train_ms.py
+++ b/train_ms.py
@@ -1,5 +1,6 @@
 import argparse
 import datetime
+import gc
 import os
 import platform
 
diff --git a/webui/inference.py b/webui/inference.py
index 91baed5..db59829 100644
--- a/webui/inference.py
+++ b/webui/inference.py
@@ -39,7 +39,7 @@ bert_models.load_tokenizer(Languages.EN)
 bert_models.load_model(Languages.ZH)
 bert_models.load_tokenizer(Languages.ZH)
 
-languages = [l.value for l in Languages]
+languages = [lang.value for lang in Languages]
 
 initial_text = "こんにちは、初めまして。あなたの名前はなんていうの？"
 
@@ -100,7 +100,7 @@ examples = [
     ],
 ]
 
-initial_md = f"""
+initial_md = """
 - Ver 2.3で追加されたエディターのほうが実際に読み上げさせるには使いやすいかもしれません。`Editor.bat`か`python server_editor.py --inbrowser`で起動できます。
 
 - 初期からある[jvnvのモデル](https://huggingface.co/litagin/style_bert_vits2_jvnv)は、[JVNVコーパス（言語音声と非言語音声を持つ日本語感情音声コーパス）](https://sites.google.com/site/shinnosuketakamichi/research-topics/jvnv_corpus)で学習されたモデルです。ライセンスは[CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/deed.ja)です。
diff --git a/webui/train.py b/webui/train.py
index 7ce8c1e..6d72061 100644
--- a/webui/train.py
+++ b/webui/train.py
@@ -400,7 +400,7 @@ def run_tensorboard(model_name):
     yield gr.Button("Tensorboardを開く")
 
 
-how_to_md = f"""
+how_to_md = """
 ## 使い方
 
 - データを準備して、モデル名を入力して、必要なら設定を調整してから、「自動前処理を実行」ボタンを押してください。進捗状況等はターミナルに表示されます。