tkinter button unable to open different python code

Question

I am trying to run a .py file from another python code using the following sequence.

from tkinter import *
import os
import sys

def open_SS():
    print('processing')
    os.system('cd /home/pi/Desktop/Backup')
    os.system('python p.py')

def close_window(): 
    master.destroy()

master = Tk()

master.minsize(width=500, height=300)

Button(master, text='Exit', command=close_window).grid(row=12, column=6, sticky=W, pady=4)
Button(master, text='SS', command=open_SS).grid(row=12, column=8, sticky=W, pady=4)

mainloop( )

The Exit button does the command, but the 'SS' button does not, the word 'processing' does get printed, just the running of the p.py file. I tried running those two os.system commands on a command terminal and it works fine. p.py is supposed to input GPIO signals to a Raspberry Pi.

Also, cd ... and python ... need to be in the same os.system invocation, for example os.system('cd ...; python ...'). If you separate them, they are executed in separate shells, and the cd performed in the first os.system() does not affect the second one. — user4815162342
– user4815162342, Commented Mar 20, 2018 at 7:57
Try fully qualified path of your installed python as well as the file in the same command. — Abhijeetk431
– Abhijeetk431, Commented Mar 21, 2018 at 10:12

Isma · Accepted Answer · 2018-03-21 15:22:12Z

2

from tkinter import *

import os

import sys

master = Tk()

def open_SS():

    print('processing')
    os.system("python /home/pi/Desktop/Backup/p.py")

btn=Button(master,text="click here")

btn.grid(row=0,column=1)

btn.bind("<Button>",open_SS)

edited Mar 21, 2018 at 15:22

Isma

15.3k5 gold badges42 silver badges54 bronze badges

answered Mar 21, 2018 at 13:22

Devdatt

825 bronze badges

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4 Comments

Maximilian Peters Over a year ago

While this code may answer the question, providing additional context regarding why and/or how this code answers the question improves its long-term value.

C Vith Over a year ago

I had to make a few changes for it to work. This code kept bringing up the error TypeError: worker() takes 0 positional arguments but 1 was given. To take care of this, a parameter needs to be given, according to this link. In the end I used def open_SS(self): import p.py because os.system just did not work.

Devdatt Over a year ago

def open_SS(event):

Devdatt Over a year ago

some changes in function line

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