Python Recipe - Log All Exceptions

import logging
import sys

def handle_unhandled_exception(exc_type, exc_value, exc_traceback):
    if issubclass(exc_type, KeyboardInterrupt):
        # Let KeyboardInterrupt pass through for normal exits
        sys.__excepthook__(exc_type, exc_value, exc_traceback)
        return
    logger = logging.getLogger(__name__)
    logger.critical("Unhandled Exception", exc_info=(exc_type, exc_value, exc_traceback))

sys.excepthook = handle_unhandled_exception