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import errno
from functools import wraps
import os
import signal
class TimeoutError(Exception):
pass
# From StackOverflow question: "timeout function if it takes too long to
# finish": http://bit.ly/1g1wHpm
def timeout(seconds=10, error_message=os.strerror(errno.ETIME)):
def decorator(func):
def _handle_timeout(signum, frame):
raise TimeoutError(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
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