我有下面的功能,用于检查ping状态
def pingOk(sHost):
try:
output = subprocess.check_output("ping -{} 1 {}".format('n' if platform.system().lower()=="windows" else 'c', sHost), shell=True)
except Exception, e:
traceback.print_exc()
return False
return True
我试着运行脚本
pingOk(sHost)
我得到以下错误:
Usage: ping [-aAbBdDfhLnOqrRUvV64] [-c count] [-i interval] [-I interface]
[-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos]
[-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option]
[-w deadline] [-W timeout] [hop1 ...] destination
Usage: ping -6 [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface]
[-l preload] [-m mark] [-M pmtudisc_option]
[-N nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize]
[-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline]
[-W timeout] destination
Traceback (most recent call last):
File "set_enviroment.py", line 54, in pingOk
output = subprocess.check_output("ping -{} 1 {}".format('n' if platform.system().lower()=="windows" else 'c', sHost), shell=True)
File "/usr/lib64/python2.7/subprocess.py", line 575, in check_output
raise CalledProcessError(retcode, cmd, output=output)
CalledProcessError: Command 'ping -c 1 ' returned non-zero exit status 2
看起来它没有格式化输出。请有人帮帮我,我做错了什么
由于投诉是关于
ping -c 1
,而不是ping -{} 1 {}
,很明显.format
确实发生了由于投诉是关于
ping -c 1
(注意后面的空格),很明显,.format
的第二个参数是一个空字符串命令失败的抱怨可能是因为
ping
需要一个目的地(因此所有的stderr都抱怨使用情况)相关问题 更多 >
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