Python Program to Shutdown and Restart Computer

In this article, you will learn and get code in Python, to shutdown or restart the computer system. Here are the list program programs available over here:

• Shutdown Computer
• Shutdown Computer Immediately
• Shutdown Computer in Given Time by User
• Restart Computer
• Restart Computer Immediately
• Restart Computer in Given Time by User
• Shutdown/Restart Computer based on User's Choice
• Shutdown Linux Based System

Note - All python programs (on Shutdown/Restart) given in this article, are well-tested and executed. Therefore be sure to save all documents before executing any program given here.

Caution - Make sure to save and close all documents before executing any program given below. Because after executing these codes (programs), your system gets shutdown/restart and you can lost your unsaved documents.

To shutdown or restart your computer system (PC or laptop) using a python code, you have to first import the os library and then use os.system() in this way:

os.system("shutdown /s")

to shutdown the system. Replace /s with /r to restart the system. Now let's create the program in Python to do the task.

Shutdown Computer using Python

This python program shutdown your computer system after default time, that is 30 seconds. As soon as you run the program given below, your computer gets shutdown after 30 seconds:

import os
os.system("shutdown /s")

Note - Close all documents before executing this program.

Note - The os module provides functions to interact with Operating System.

Note - The os.system() method is used to execute a command in a subshell. Here, the command is of string type.

Shutdown Computer Immediately

To shutdown the system immediately, provide the timer as 0 second. So that the system gets shutdown within 0 second or immediately as shown in this program:

import os
os.system("shutdown /s /t 0")

Note - The /t 0 is extra code added in this program (than previous one). Here /t stands for timer and 0 indicates 0 second. Therefore after executing this program, system gets shutdown within 0 second.

Shutdown Computer in Given Time

This program asks from user to enter the number of seconds to set the timer to shutdown the system:

import os

print("Enter Number of Seconds to Shutdown System: ")
sec = int(input())

strOne = "shutdown /s /t "
strTwo = str(sec)
str = strOne+strTwo

os.system(str)

Here is the initial output produced by this python program:

Now enter the number of seconds say 10 to shutdown the system in 10 seconds.

Note - The str(sec) is used to convert sec (an integer type value) to string. Because to use + operator to concatenate two string values. That is, strOne and strTwo. The second string is the timer value entered by user.

Restart Computer using Python

To restart your computer system using a python program, just replace the /s with /r from the program given to shutdown the system. Rest of the things will be same as shown in the program given below:

import os;
os.system("shutdown /r")

Restart Computer Immediately

This python program restarts your computer in 0 second or immediately:

import os
os.system("shutdown /r /t 0")

Restart Computer in Given Time

This program is same as the program given in shutdown computer in given time section. The only thing to do is, replace the following statement:

strOne = "shutdown /s /t "

with the statement given below:

strOne = "shutdown /r /t "

Note - Just a matter of s and r, the whole program gets changed.

Note - Also replace the Shutdown word to Restart, from print message.

Shutdown & Restart based on User's Choice

Here is the combined version of both programs, that is shutdown and restart program in python.

This python program asks from user to enter the choice to perform the desired action. That is, choices are given to perform the things such as shutdown immediately, shutdown in given time, and so on as shown in the program given below:

import os

print("1. Shutdown Computer Immediately")
print("2. Shutdown Computer after Given Time")
print("3. Restart Computer Immediately")
print("4. Restart Computer after Given Time")
print("5. Exit")
print(end="Enter Your Choice: ")
choice = int(input())

if choice==1:
    os.system("shutdown /s /t 0")
elif choice==2:
    print(end="Enter Number of Seconds: ")
    sec = int(input())
    strOne = "shutdown /s /t "
    strTwo = str(sec)
    str = strOne+strTwo
    os.system(str)
elif choice==3:
    os.system("shutdown /r /t 0")
elif choice==4:
    print(end="Enter Number of Seconds: ")
    sec = int(input())
    strOne = "shutdown /r /t "
    strTwo = str(sec)
    str = strOne+strTwo
    os.system(str)
elif choice==5:
    exit()
else:
    print("Wrong Choice!")

Here is the snapshot of the above python program, giving user, five options to proceed, what he/she wants to do. That is, either shutdown, restart or exit from the program:

If user enters 1 or 3 as choice, then the computer gets shutdown/restart just after pressing the ENTER key. And when user enters 2 as choice, then the program further asks to enter the number of seconds to shutdown the system:

Now enter the input say 180 to shutdown the system after 180 seconds or 3 minutes.

Shutdown Linux Based System

To shutdown linux based system using a Python program, here is the code:

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

This program shutdown the linux based system immediately.