timeout_wrapper.py

from functools import wraps
import errno
import signal


def timeout(seconds=10, error_message=os.strerror(errno.ETIME)):
    """
    https://stackoverflow.com/questions/2281850/timeout-function-if-it-takes-too-long-to-finish

    see also
    """
    def decorator(func):
        def _handle_timeout(signum, frame):
            send_email(['ben.is.located@gmail.com'],error_message,'TIMEOUT OCCURRED')
            raise Exception(error_message)
        def wrapper(*args, **kwargs):
            signal.signal(signal.SIGALRM, _handle_timeout)
            signal.alarm(seconds)
            try:
                result = func(*args, **kwargs)
            finally:
                signal.alarm(0)
            return result
        return wraps(func)(wrapper)
    return decorator