Sending a SIGHUP signal to some external process from Python script

Code :

 import psutil  
 import os  
 import signal  
 pids = psutil.get_pid_list()  
 for pid in pids:  
    if psutil.Process(pid).name == "process_name":  
     os.kill(pid,signal.SIGHUP)  
     break  

Steps to follow.

1.Get the PID of the process, in this case "process_name"  to which you want to send out a SIGHUP signal.
2.Use os.kill(pid,sig) command to send out the SIGHUP signal to that process.

1.Get the PID of the process to which you want to send out a SIGHUP signal.

One has to install a package called psutil by the following command.

easy_install psutil

Check out the following links for more details

https://code.google.com/p/psutil/

https://pypi.python.org/pypi/psutil

use psutil.get_pid_list() to get all of the PIDs.

psutil.get_pid_list() works in the following manner. 

pids = [int(x) for x in os.listdir('/proc') if x.isdigit()]

return pids

once you get all the PIDs get the PID you are interested by comparing the name of the process.

if psutil.Process(pid).name == "process_name":

2.Use os.kill(pid,sig) command to send out the SIGHUP signal to that process.

os.kill(pid,signal.SIGHUP).

Done :)

I know the method of going through all the PIDs is not a good idea ! but i could not find anything better so .....