Difference between exit() and sys.exit() in Python

Difference between exit() and sys.exit() in Python - Stack Overflow https://stackoverflow.com/questions/6501121/difference-between-exit-and-sys-exit-in-python

def ctrl_runtime():
    if time.time() - ctrl_start >= max_script_time:
        s = '%s%s%s%s%s' % ('程序开始执行时间', ctrl_start, '执行时间阈值', max_script_time, '终止执行')
        logging.info(s)
        print(s)
        sys.exit(s)

def ctrl_runtime(exit_type=''):
    if time.time() - ctrl_start >= max_script_time:
        s = '%s%s%s%s%s%s%s%s%s' % (
            '程序开始执行时间', ctrl_start, '执行时间阈值', max_script_time, '终止执行', ' exit_type =', exit_type, ' threadID ',
            threading.get_ident())
        logging.info(s)
        if exit_type == '':
            exit(s)
        elif exit_type == 'sys':
            sys.exit(s)
        elif exit_type == 'os':
            # an integer is required
            # Required argument 'status' (pos 1) not found
            os._exit(-1024)

Sat, 02 Dec 2017 15:55:55 chk_url_status_ordertab_notexpire.py[line:84] INFO DB (2003, "Can't connect to MySQL server on 'rm-xyz.mysql.xyz.acom.com' (timed out)")[thread:139775600219904][process:8191]
Sat, 02 Dec 2017 15:56:31 chk_url_status_ordertab_notexpire.py[line:84] INFO DB (2003, "Can't connect to MySQL server on 'rm-xyz.mysql.xyz.acom.com' (timed out)")[thread:139775029778176][process:8191]
Sat, 02 Dec 2017 15:59:20 chk_url_status_ordertab_notexpire.py[line:185] ERROR 20171202 15:58:29 threadID 139775080134400www.abc.cn/info/35028470.html DB Exception- (2003, "Can't connect to MySQL server on 'rm-xyz.mysql.xyz.acom.com' (timed out)")[thread:139775080134400][process:8191]
Sat, 02 Dec 2017 16:04:36 chk_url_status_ordertab_notexpire.py[line:84] INFO DB (2003, "Can't connect to MySQL server on 'rm-xyz.mysql.xyz.acom.com' (timed out)")[thread:139774509692672][process:8191]
Sat, 02 Dec 2017 16:16:33 chk_url_status_ordertab_notexpire.py[line:84] INFO DB (2003, "Can't connect to MySQL server on 'rm-xyz.mysql.xyz.acom.com' (timed out)")[thread:139773964429056][process:8191]

Sat, 02 Dec 2017 18:16:53 chk_url_status_ordertab_notexpire.py[line:46] INFO 程序开始执行时间1512205940.803967执行时间阈值3600终止执行 exit_type =os threadID 140530566547200[thread:140530566547200][process:31060]

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/bin/sh: 行 1: 7295 已终止 python /home/data/crontab_chk_url/personas/trunk/plugins/spider/chk_url_status.py &>/dev/null