Python restart program

Question

I made a program that asks you at the end for a restart.

I import os and used os.execl(sys.executable, sys.executable, * sys.argv) but nothing happened, why?

Here's the code:

restart = input("\nDo you want to restart the program? [y/n] > ")
if str(restart) == str("y"):
    os.execl(sys.executable, sys.executable, * sys.argv) # Nothing hapens
else:
    print("\nThe program will be closed...")
    sys.exit(0)

This is unusual. Why are you attempting to reinvoke the program from within the program? — Makoto, Jan 06 '18 at 17:33
`restart == 'y'`, the `str` is redundant. Also, why not just use a `while`? — cs95, Jan 06 '18 at 17:35
@claudio26 try it: os.execv(sys.executable, ['python'] + sys.argv) — Anup, Jan 06 '18 at 17:54
This looks like an [XY Problem](http://xyproblem.info/). The correct way to implement this is to restructure the code so you can simply call a function to re-run the program. — ekhumoro, Jan 06 '18 at 18:00

score 6 · Accepted Answer · edited Jul 13 '22 at 05:34

import os
import sys

restart = input("\nDo you want to restart the program? [y/n] > ")

if restart == "y":
    os.execl(sys.executable, os.path.abspath(__file__), *sys.argv) 
else:
    print("\nThe program will be closed...")
    sys.exit(0)

os.execl(path, arg0, arg1, ...)

sys.executable: python executeable

os.path.abspath(__file__): the python code file you are running.

*sys.argv: remaining argument

It will execute the program again like python XX.py arg1 arg2.

DARK_C0D3R · Answer 2 · 2020-02-10T04:54:32.753

4

Maybe os.execv will work but why not use directly using os.system('python "filename.py"') if you have environment and path variable set something like :

import os

print("Hello World!")
result=input("\nDo you want to restart the program? [y/n] > ")
if result=='y':
     os.system('python "C:/Users/Desktop/PYTHON BEST/Hackerrank.py"')
else:
     print("\nThe program will be closed...")

edited Feb 10 '20 at 04:54

answered Jan 06 '18 at 18:10

DARK_C0D3R

2,075
16
21

score 0 · Answer 3 · edited Sep 19 '22 at 21:40

0

Just import the program you want to restart and run it under the desired condition like this

Title: hello. py

import hello 
if (enter generic condition here):
    hello

edited Sep 19 '22 at 21:40

Kraigolas

5,121
3
12
37

answered Nov 28 '21 at 23:46

Falcon

9
1

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Nov 29 '21 at 03:32

Tsunami014 · Answer 4 · 2022-07-17T23:55:35.617

try using;

while True:
    answer = input("\nDo you want to restart the program? [y/n] > ")
    if answer == "n":
        print("\nOk, Bye!")
        break

or

retry = True
while retry:
    answer = input("\nDo you want to restart the program? [y/n] > ")
    if answer == "n":
        print("\nOk, Bye!")
        retry = False

It is a way that you can easily modify to your liking, and it also means that you can load variables once instead of loading them every time you restart. This is just a way to do it without any libraries. You indent all your code and put it in a while loop, and that while loop determines whether your code restarts or not. To exit it, you put in a break or change a variable. It is easiest because you don't have to understand a new library.

score -1 · Answer 5 · answered Jan 06 '18 at 18:01

-1

os.execv(sys.executable, ['python'] + sys.argv)

solved the problem.

answered Jan 06 '18 at 18:01

claudio26

149
1
1
8

This code seems to be the most common way to restart a python program. I'm guessing you're being down voted because of the lack of explanation. Note that, os.execv is not really a good option on Windows. https://bugs.python.org/issue19124 – ReenigneArcher Mar 26 '22 at 23:40

Python restart program

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