I've a GUI which will perform some functions when the buttons are pressed.
now i want to create a button in the GUI which will call and run a shell script in the background.
how can i achieve this ?
4 Answers
Not sure if your question is about how to call a shell script in Python, or how to make a button in your GUI. If the former, my comment above (recommending some research on subprocess.Popen) is the solution. Otherwise:
# assuming Python3
import tkinter as tk
import subprocess as sub
WINDOW_SIZE = "600x400"
root = tk.Tk()
root.geometry(WINDOW_SIZE)
tk.Button(root, text="Push me!", command=lambda: sub.call('path/to/script')).pack()
7 Comments
ayaan
i know how to create a button i just want to know how to call the shell program, sorry for the ambiguity in the question
kingmakerking
@AdamSmith It shows an error saying OSError: [Errno 13] Permission denied
Adam Smith
@kingmakerking Then you don't have permission to run that script from where you are. You'll have to get your OS to let you run it -- that's not a Python thing
kingmakerking
@AdamSmith No I do have permissions. Still not working?
Adam Smith
@kingmakerking That error means the OS is not allowing you to launch that script because you do not have permission to do so. Good luck!
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Python can run shell scripts using the supbprocess module. In order to run it in the background you can start it from a new thread.
To use the module
import subprocess
...
subprocess.call(['./yourScript.sh'])
For a good python threading resource you can try: How to use threading in Python?
Comments
Adding to what @lakesh said, below is the complete script :
import Tkinter
import subprocess
top = Tkinter.Tk()
def helloCallBack():
print "Below is the output from the shell script in terminal"
subprocess.call('./yourscript.sh', shell=True)
B = Tkinter.Button(top, text ="Hello", command = helloCallBack)
B.pack()
top.mainloop()
Please note that the shell script is in the same directory as that of the python script.
If needed, do chmod 777 yourscript.sh
subprocess.call('./yourscript.sh', shell=True)
and import Tkinter and not import tkinter solved the problems I was facing.
Comments
Use Tkinter to create a button. For more info, look at this video:http://www.youtube.com/watch?v=Qr60hWFyKHc
Example:
from Tkinter import *
root = Tk()
app = Frame(root)
app.grid()
button1 = Button(app,"Shell Script")
button1.grid()
root.mainloop()
To add the functionality: change button1 line to:
button1 = Button(app,"Shell Script",command=runShellScript)
def runShellScript():
import subprocess
subprocess.call(['./yourScript.sh'])
1 Comment
kingmakerking
It throws an error " NameError: name 'runShellScript' is not defined
subprocess.Popen