New submission from Richard Warfield <warfi...@gmail.com>:
I have an application (https://github.com/litxio/ptghci) using embedded Python, which needs to set a signal handler (and use the prompt-toolkit library which itself sets signal handlers). My call to signal.signal is guarded by a check that we're running in the main thread: if threading.current_thread() is threading.main_thread(): print (threading.current_thread().name) signal.signal(signal.SIGINT, int_handler) And the above indeed prints "MainThread". But this raises an exception: File "app.py", line 45, in __init__ signal.signal(signal.SIGINT, int_handler) File "/usr/lib/python3.8/signal.py", line 47, in signal handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler)) ValueError: signal only works in main thread This seems like something that should not happen. Now, I tried to generate a simple replicating example but thus far haven't been able to do so -- simply calling signal.signal from PyRun_SimpleString doesn't do the trick, even within a pthreads thread. ---------- messages: 357390 nosy: Richard Warfield priority: normal severity: normal status: open title: "signal only works in main thread" in main thread type: behavior versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue38904> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
