[英]Python program exiting before signal handler is finished running
我已經注冊了SIGINT處理程序,以便在python程序退出之前保存一些數據。 似乎處理程序在完成之前已終止。 為什么會發生這種情況,我該怎么辦?
import sys
import signal
import pickle
debug_data = {
# some hash
}
debug_known_values = {
# some other hash
}
def exit_run(signal, frame):
print("Saving debug data...")
with open("debug_data.pickle", 'wb') as debug_data_file:
pickle.dump(debug_data, debug_data_file)
print("done dumping debug data")
print("Saving debug known values...")
with open("debug_known_values.pickle", 'wb') as debug_known_values_file:
pickle.dump(debug_known_values, debug_known_values_file)
print("done dumping known values")
print("exiting")
sys.exit(0)
signal.signal(signal.SIGINT, exit_run)
if __name__ == "__main__":
input()
exit_run(None, None)
如果我按Enter鍵可以正常退出程序,
Saving debug data...
done dumping debug data
Saving debug known values...
done dumping known values
exiting
如果我按Ctrl + C,我會得到
Saving debug data...
done dumping debug data
Saving debug known values...
我在Windows x64上使用python 3.3.2。
此問題是由使用ComEmu引起的。 它正在殺死進程,然后才能完成退出。 該代碼在普通的cmd窗口中可以正常工作。
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