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| import logging | |
| import sys | |
| from logging.handlers import RotatingFileHandler | |
| def setup_logger(): | |
| # Formatting | |
| log_format = logging.Formatter( | |
| '%(asctime)s - %(levelname)s - %(module)s - %(message)s (%(funcName)s:%(lineno)d)' | |
| ) | |
| # Base Logger | |
| logger = logging.getLogger("swiftquery") | |
| logger.setLevel(logging.DEBUG) # Set base level to debug | |
| # --- Handlers --- | |
| # 1. Console Handler (for stdout) | |
| console_handler = logging.StreamHandler(sys.stdout) | |
| console_handler.setLevel(logging.INFO) # Only INFO and above for console | |
| console_handler.setFormatter(log_format) | |
| # 2. File Handler (for logging to a file) | |
| # Rotates logs, keeping 5 backups of 5MB each | |
| file_handler = RotatingFileHandler( | |
| 'app.log', maxBytes=5*1024*1024, backupCount=5 | |
| ) | |
| file_handler.setLevel(logging.DEBUG) # DEBUG and above for file | |
| file_handler.setFormatter(log_format) | |
| # Add handlers to the logger | |
| logger.addHandler(console_handler) | |
| logger.addHandler(file_handler) | |
| return logger | |
| # Instantiate the logger | |
| logger = setup_logger() | |