'shutting down computer (linux) using python

I am trying to write a script that will shut down the computer if a few requirements are filled with the command

    os.system("poweroff")

also tried

    os.system("shutdown now -h")

and a few others. but nothing happens when I run it, the computer goes through the code without crashing or producing any error messages and terminates the script normally, without shutting down the computer.

How does one shutdown the computer in python?

edit:

Seems that the commands I have tried requires root access. Is there any way to shut down the machine from the script without elevated privileges?

pythonlinuxpython-2.7system-shutdown


Solution 1:[1]

import os
os.system("shutdown now -h")

execute your script with root privileges.

Solution 2:[2]

The best way to shutdown a system is to use the following codes

import os
os.system('systemctl poweroff')

Solution 3:[3]

any way to shut down...without elevated privileges?

No, there isn't (fortunately!).

Keep in mind that you can use several system features to make privilege escalation for normal users easier:

Solution 4:[4]

Just to add to @BorrajaX 's answer for those using logind (newer fedora systems):

import dbus
sys_bus = dbus.SystemBus()
lg = sys_bus.get_object('org.freedesktop.login1','/org/freedesktop/login1')
pwr_mgmt =  dbus.Interface(lg,'org.freedesktop.login1.Manager')
shutdown_method = pwr_mgmt.get_dbus_method("PowerOff")
shutdown_method(True)

Solution 5:[5]

In case you want to execute it from root, @Rahul R Dhobi answer works great: 
import os
os.system("shutdown now -h")

Execution: sudo python_script.py

In case you need to execute it without root privileges: 
import subprocess
import shlex
cmd = shlex.split("sudo shutdown -h now")
subprocess.call(cmd)

Execution: $ python_script.py # no sudo required

Solution 6:[6]

linux: 

import subprocess
cmdCommand = "shutdown -h now"
process = subprocess.Popen(cmdCommand.split(), stdout=subprocess.PIPE)

Windows:

import subprocess
cmdCommand = "shutdown -s"
process = subprocess.Popen(cmdCommand.split(), stdout=subprocess.PIPE)

Solution 7:[7]

try this

import os
os.system("sudo shutdown now -h")

this worked for me

Solution 8:[8]

I'am using Fedora and it works with me. all what i need to do is Writing this line in terminal : 

$ sudo python  yourScript.py

Solution 9:[9]

There is a way to shut down the computer without using elevated permissions. 

import os
subprocess.call(['osascript', '-e', 'tell app "system events" to shut down'])

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Rahul R Dhobi
Solution 2
Solution 3 Brian Cain
Solution 4 Roeften
Solution 5
Solution 6 Ali Nemati
Solution 7 Hamid
Solution 8 Black Kinght
Solution 9 Sachith Muhandiram

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