Python Issue with Values

Question

I am trying to write a program in python (just learning as it looks a nice language) but have come across a small problem.

My code works for the most part but decided to print found process rather than just the first found process. All i want it to print out is whether it has found a process or not.

I have searched for sshd for example and my output has been

found
found
found

as there are 3 processes running.

my code is

import os
import signal

vProcessName = "sshd"

for line in os.popen("ps xa"):
    fields = line.split() 
    if vProcessName  in fields[4]: 
        print("Found")

Thank you for any help you may provide its greatly appreciated.

And what is the question? Why doesn't it leave the cycle after first finding? How about break? — Tomas Pastircak
– Tomas Pastircak, Commented Apr 5, 2014 at 13:55

falsetru · Accepted Answer · 2014-04-05 14:06:19Z

2

Using break statement, you can get out of the loop:

for line in os.popen("ps xa"):
    fields = line.split()

    if vProcessName  in fields[4]:
        print("Found")
        break # <----

Alternativing using any:

if any(vProcessName in line.split() for line in os.popen("ps xa")):
    print("Found")

edited Apr 5, 2014 at 14:06

answered Apr 5, 2014 at 13:55

falsetru

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