模拟 Ctrl-C 到 python 脚本
我有一个 python 脚本，它等待一些作业并在线程中执行它们（使用 subprocess.Popen 和 shell=True）。当我在 shell 中运行脚本并尝试使用 Ctrl-C 终止它时，它会正常且干净地关闭。
问题是我想将此脚本作为守护进程运行，然后使用某种 unix 信号终止它。 INT 信号应该与 Ctrl-C 相同，但工作方式不同。它使 subproces.popen 的子进程保持运行。
当我收到信号时，我还尝试在主线程中引发KeyboardInterupt，但这也无法关闭脚本并杀死所有子进程。
对于如何模拟 Ctrl-C 有什么建议吗？
调用 subprocess.popen 的示例：
shell_cmd = "bwa aln -t 8 file1.fasta file1.fastq.gz > file1.sam.sai"
process = subprocess.Popen(shell_cmd,
shell=True,
stderr=subprocess.PIPE)
I have a python script which waits for some jobs and executes them in threads (using subprocess.Popen with shell=True). When I run a script in a shell and try to terminate it with Ctrl-C it closes down normally and cleanly.
The problem is I want to run this script as a daemon and then terminate it using some kind of unix signal. INT signal should be the same as Ctrl-C but it doesn't work in the same way. It leaves child processes of subproces.popen running.
I also tried raising KeyboardInterupt in main thread when I receive the signal, but that also fails to close the script and kill all children processes.
Any suggestions how to emulate Ctrl-C?
Example of call to subprocess.popen:
shell_cmd = "bwa aln -t 8 file1.fasta file1.fastq.gz > file1.sam.sai"
process = subprocess.Popen(shell_cmd,
shell=True,
stderr=subprocess.PIPE)
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在主进程中引发
KeyboardInterrupt会在主进程中引发KeyboardInterrupt。您必须将信号发送到子进程。您是否尝试过
Popen.send_signal？或者，更直接地说，
Popen.terminate？Raising
KeyboardInterruptin the main process raisesKeyboardInterruptin the main process. You have to send the signal to the subprocesses.Have you tried
Popen.send_signal?Or, even more straightforwardly,
Popen.terminate?Ctrl-C 向整个进程组发送 SIGINT，不仅仅是一个进程。使用 os.killpg() 或带有
kill 的负进程 ID 向进程组发送 SIGINT。Ctrl-C sends SIGINT to the entire process group, not just one process. Use
os.killpg()or a negative process id withkillto send SIGINT to a process group.