Refactor pytest workflow and improve test documentation

- Updated the GitHub Actions workflow for pytest to streamline Python setup and dependency installation.
- Enhanced test documentation in test_spot_symbols.py by translating comments to English for better clarity and consistency.
- Removed unnecessary comments to improve code readability.

.github/workflows/pytest.yaml

@@ -13,15 +13,15 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.9  # 使用するPythonのバージョンを指定してください
+        python-version: 3.9
 
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install pipenv
         pip install git+https://github.com/aoki-h-jp/binance-bulk-downloader
-        pipenv install --dev  # Pipenvを使用して依存関係をインストール
+        pipenv install --dev
 
     - name: Run pytest
       run: |
-        pipenv run pytest -v -s  # pytestを実行するコマンドを指定
+        pipenv run pytest -v -s

tests/test_spot_symbols.py

@@ -3,14 +3,14 @@
 """
 
 import pytest
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch
 
 from binance_bulk_downloader.downloader import BinanceBulkDownloader
 
 
 @pytest.fixture
 def mock_s3_response():
-    """モックのS3レスポンスを生成するフィクスチャ"""
+    """Mock S3 response"""
     return {
         "BTCUSDT": [
             "data/spot/daily/klines/BTCUSDT/1h/BTCUSDT-1h-2024-01-01.zip",
@@ -75,7 +75,7 @@ def test_spot_symbols(
 ):
     """
     Test spot market symbols filtering
-    :param mock_s3_response: モックのS3レスポンス
+    :param mock_s3_response: mock S3 response
     :param tmpdir: temporary directory
     :param data_type: type of data to download
     :param data_frequency: frequency of data