python 捕捉退出事件

最近写了个python脚本,在服务器上运行,经常莫名其妙的退出,也不知道原因,后面查了资料得到下面两个方法去捕捉退出的发生,一个是捕捉kill信号,另一个是注册atexit函数

例子:

 

import os
import sys
import time
import atexit
import signal
import traceback

def term_sig_handler(signum, frame):
    print 'catched singal: %d' % signum
    sys.exit()

@atexit.register
def atexit_fun():
    print 'i am exit, stack track:'

    exc_type, exc_value, exc_tb = sys.exc_info()
    traceback.print_exception(exc_type, exc_value, exc_tb)

if __name__ == '__main__':
    # catch term signal
    signal.signal(signal.SIGTERM, term_sig_handler)
    signal.signal(signal.SIGINT, term_sig_handler)
    while True:
        print 'hello'
        time.sleep(3)

输出:

 

hello
hello
hello
hello
hello
hello
hello
catched singal: 15
i am exit, stack track: None
 

注意:atexit_fun不能在main之后,不然不会执行

 

你可能感兴趣的:(Python)