直接用，但不会抛异常，稳如狗

timeout.py

from contextlib import contextmanager
import signal

@contextmanager
def timeout(seconds=3):
    class TimeoutError(Exception):
        pass
    def handler(*args,**kwargs):
        print("[-] Timeout!")
        raise TimeoutError
    signal.signal(signal.SIGALRM,handler)
    signal.alarm(seconds)
    print("[+] Timeout setup successful")
    try:
        yield
    except TimeoutError:
        pass
    print("[+] func terminated")

def dtimeout(seconds=3):
    def realdecorator(fn):
        def warpped(*args,**kwargs):
            class TimeoutError(Exception):
                pass

            def handler(*args, **kwargs):
                print("[-] Timeout!")
                raise TimeoutError

            signal.signal(signal.SIGALRM, handler)
            signal.alarm(seconds)
            print("[+] Timeout setup successful")
            try:
                fn(*args,**kwargs)
            except TimeoutError:
                pass
            print("[+] func terminated")
        return warpped
    return realdecorator