linux - Python try and except in launching password less ssh connection -


i want know whether scenario of taking ssh works or not try , except. if try part ask ssh password should move except part. here code,

 import os,sys,subprocess           def process (input):             print input             = subprocess.popen (input,shell=true,stdout=subprocess.pipe,stderr=subprocess.pipe)             output,error = a.communicate()             return output,error   try:          process('ssh system1@123.123.123.123 \'ls\'')  except:          process('ssh system2@10.101.10.1 \'ssh system1@123.123.123.123 \'ls\' \'')

in case not working @ ssh time out.

as wrote it won't, because ssh sit there waiting password , not fail.

however since not sending input command, can pass -n option ssh , fail if wanted ask anything. -n should work.


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