[英]how to capture error from python's subprocess.run, while using timeout
I cannot figure out how to use python's subprocess.run to capture stdout, stderr, and exitcode ... and whatever else can be captured.我不知道如何使用 python 的 subprocess.run 来捕获 stdout、stderr 和 exitcode ......以及其他任何可以捕获的东西。 I also have to use the timeout option because some of the thousands of commands I'm running hang, ie., run interminably.
我还必须使用超时选项,因为我正在运行的数千个命令中的一些命令会挂起,即无休止地运行。 I bet I have missed something obvious, and I apologize.
我敢打赌我错过了一些明显的东西,我道歉。 I've spent days on this and cannot figure it out.
我已经花了几天的时间,无法弄清楚。
Any help you could give me would be much appreciated.您能给我的任何帮助将不胜感激。
Here's my defective code:这是我有缺陷的代码:
seconds = timeout
try:
proc = subprocess.run(cmd, capture_output=True, timeout=seconds)
except subprocess.TimeoutExpired:
print('This process ran too long:\n' + cmd + '\n')
out, err = proc.communicate()
exitcode = proc.returncode
if len(out) == 0: out="''"
if len(err) == 0: err="''"
#
return exitcode, out, err
You're almost there.您快到了。 Instead of
代替
out, err = proc.communicate()
use用
out, err = proc.stdout, proc.stderr
Regarding your except clause, I'm not sure if you'll be able to get stdout, stderr and returncode after a timeout.关于您的 except 子句,我不确定您是否能够在超时后获得 stdout、stderr 和 returncode。 Give it a check.
给它一个检查。 If not, then consider
return "", "", 1
or something like that in your except clause.如果没有,那么请考虑在您的 except 子句中使用
return "", "", 1
或类似的内容。
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