builtins.ValueError: signal only works in main thread of the main interpreter 是一个在 Python 中常见的错误,表明尝试在非主线程中处理信号。Python 的信号处理机制是专为在主线程中设计的,任何在非主线程中处理信号的尝试都会导致这个错误。 2. 可能原因 出现这个错误的可能原因是在非主线程中调用了与信号相...
currentThread())) signal.signal(signal.SIGUSR1, usr1_handler) def thread_get_signal(): # 如果在子线程中设置signal的handler会报错 # ValueError: signal only works in main thread # signal.signal(signal.SIGUSR2, usr1_handler) print("waiting signal", threading.currentThread()) # sleep 进程直到...
Signal Catcher线程接受到kernel系统底层的消息进行dump当前虚拟机的信息并且设置每个线程的标志位(check_poi...
“Starting a Matplotlib GUI outside of the main thread will likely fail.” 当时瞬间就感觉,事情不太对的样子。果然,他告诉我matplotlib只能运行在主线程里面: “set_wakeup_fd only works in main thread” 于是我,停止了思考(bushi 尝试方法1:使用multiprocessing(最后未使用) ...
"signal only works in main thread"); returnNULL; } #endif if(sig_num <1|| sig_num >= NSIG) { PyErr_SetString(PyExc_ValueError, "signal number out of range"); returnNULL; } if(obj == IgnoreHandler) func = SIG_IGN; elseif(obj == DefaultHandler) ...
在文章subprocess模块用法中介绍了Python中的threading.Thread.join()时不能响应信号的问题。这个问题被Python官方标记为Bug。 Python官方的Issue指出这个Bug与Python的signal、基础线程库thread(C实现)和高级线程库threading(Python封装)都有关,下面首先概览这三个模块的实现,接着通过编译调试的方式来观赏这个Bug的具体过程...
File"/data/tornado_analyst/test_signal.py", line 14,inthread_sig signal.signal(signal.SIGALRM, h.handler) ValueError: signal only worksin main thread python报告说,signal只能工作在主线程中。 下面是一些关于python中信号的注意点: /*NOTES ON THE INTERACTION BETWEEN SIGNALS AND THREADS ...
signal.signal(1, handle_hup) if __name__ == "__main__": ign = signal.SIG_IGN dfl = signal.SIG_DFL print "SIG_IGN", ign print "SIG_DFL", dfl print "*"*40 for name in dir(signal): if name[:3] == "SIG" and name[3] != "_": ...
signal only works in main thread # signal.signal(signal.SIGUSR2, usr1_handler) print("waiting signal", threading.currentThread()) # sleep 进程直到接收到信号 signal.pause() print("waiting done") receiver = threading.Thread(target=thread_get_signal, name="receiver") receiver.start() # 为了保...
assignee=Noneclosed_at=<Date2021-11-20.18:01:02.250>created_at=<Date2021-01-23.10:40:30.388>labels=['3.9','type-crash','expert-asyncio']title='set_wakeup_fd() only works in main thread'updated_at=<Date2021-11-20.18:01:02.249>user='https://bugs.python.org/MeneMeneTekel' ...