Refactor code for improved readability and consistency

- Cleaned up whitespace and formatting in various files including http.py, language.py, logger.py, safe_exec.py, and SQL migration scripts.
- Consolidated import statements and removed unnecessary blank lines.
- Updated logging configuration for better clarity.
- Enhanced the safe execution code with improved error handling and logging.
- Removed commented-out code and unnecessary variables in backfill_zero_trades.py and other scripts.
- Added a pyproject.toml for Ruff and Vulture configuration.
- Introduced requirements-dev.txt for development dependencies.
- Removed commented-out stock entries in init.sql for cleaner migration scripts.

backend_api_python/app/config/settings.py

@@ -1,93 +1,99 @@
 """
 Apply main configuration
 """
+
 import os
 
+
 class MetaConfig(type):
     # ==================== Service Configuration ====================
     # Service startup parameters are usually determined by environment variables or command line parameters. Reading from the database is not recommended.
-    
+
     @property
     def HOST(cls):
-        return os.getenv('PYTHON_API_HOST', '0.0.0.0')
+        return os.getenv("PYTHON_API_HOST", "0.0.0.0")
 
     @property
     def PORT(cls):
-        return int(os.getenv('PYTHON_API_PORT', 5000))
+        return int(os.getenv("PYTHON_API_PORT", 5000))
 
     @property
     def DEBUG(cls):
-        return os.getenv('PYTHON_API_DEBUG', 'False').lower() == 'true'
+        return os.getenv("PYTHON_API_DEBUG", "False").lower() == "true"
 
     @property
     def APP_NAME(cls):
-        return 'QuantDinger Python API'
+        return "QuantDinger Python API"
 
     @property
     def VERSION(cls):
-        return '2.0.0'
+        return "2.0.0"
 
     # ==================== Authentication configuration ====================
     @property
     def SECRET_KEY(cls):
-        return os.getenv('SECRET_KEY', 'quantdinger-secret-key-change-me')
+        return os.getenv("SECRET_KEY", "quantdinger-secret-key-change-me")
 
     @property
     def ADMIN_USER(cls):
-        return os.getenv('ADMIN_USER', 'quantdinger')
+        return os.getenv("ADMIN_USER", "quantdinger")
 
     @property
     def ADMIN_PASSWORD(cls):
-        return os.getenv('ADMIN_PASSWORD', '123456')
+        return os.getenv("ADMIN_PASSWORD", "123456")
 
     # ==================== Log configuration ====================
     # Log configuration is usually required at the earliest stage of application startup. It is recommended to maintain environment variables.
-    
+
     @property
     def LOG_LEVEL(cls):
-        return os.getenv('LOG_LEVEL', 'INFO')
+        return os.getenv("LOG_LEVEL", "INFO")
 
     @property
     def LOG_DIR(cls):
-        return os.getenv('LOG_DIR', 'logs')
+        return os.getenv("LOG_DIR", "logs")
 
     @property
     def LOG_FILE(cls):
-        return os.getenv('LOG_FILE', 'app.log')
+        return os.getenv("LOG_FILE", "app.log")
 
     @property
     def LOG_MAX_BYTES(cls):
-        return int(os.getenv('LOG_MAX_BYTES', 10 * 1024 * 1024))
+        return int(os.getenv("LOG_MAX_BYTES", 10 * 1024 * 1024))
 
     @property
     def LOG_BACKUP_COUNT(cls):
-        return int(os.getenv('LOG_BACKUP_COUNT', 5))
+        return int(os.getenv("LOG_BACKUP_COUNT", 5))
 
     # ==================== Security Configuration ====================
 
     @property
     def RATE_LIMIT(cls):
         from app.utils.config_loader import load_addon_config
-        val = load_addon_config().get('app', {}).get('rate_limit')
-        return int(val) if val is not None else int(os.getenv('RATE_LIMIT', 100))
+
+        val = load_addon_config().get("app", {}).get("rate_limit")
+        return int(val) if val is not None else int(os.getenv("RATE_LIMIT", 100))
 
     # ==================== Function switch ====================
 
     @property
     def ENABLE_CACHE(cls):
         from app.utils.config_loader import load_addon_config
-        val = load_addon_config().get('app', {}).get('enable_cache')
+
+        val = load_addon_config().get("app", {}).get("enable_cache")
         if val is not None:
             return bool(val)
-        return os.getenv('ENABLE_CACHE', 'False').lower() == 'true'
+        return os.getenv("ENABLE_CACHE", "False").lower() == "true"
 
     @property
     def ENABLE_REQUEST_LOG(cls):
         from app.utils.config_loader import load_addon_config
-        val = load_addon_config().get('app', {}).get('enable_request_log')
+
+        val = load_addon_config().get("app", {}).get("enable_request_log")
         if val is not None:
             return bool(val)
-        return os.getenv('ENABLE_REQUEST_LOG', 'True').lower() == 'true'
+        return os.getenv("ENABLE_REQUEST_LOG", "True").lower() == "true"
+
 
 class Config(metaclass=MetaConfig):
     """Application configuration class."""