subprocess.call() interacting with GUI (Tkinter)

Think I've got the basics of using an Entry as stdin to subprocess. You may have to jiggle it about for your own needs (re: output to Text widget).

This example calls a test script:

# test.py:#!/usr/bin/env pythona = raw_input('Type something!: \n') #the '\n' flushes the promptprint a

that simply requires some input (from sys.stdin) and prints it.

Calling this and interacting with it via a GUI is done with:

from Tkinter import *import subprocessroot = Tk() e = Entry(root)e.grid()b = Button(root,text='QUIT',command=root.quit)b.grid()def entryreturn(event):    proc.stdin.write(e.get()+'\n') # the '\n' is important to flush stdin    e.delete(0,END)# when you press Return in Entry, use this as stdin # and remove ite.bind("<Return>", entryreturn)proc = subprocess.Popen('./test.py',stdin=subprocess.PIPE)root.mainloop()

Now whatever is typed into Entry e (followed by the Return key), is then passed via stdin to proc.

Hope this helps.

Also check this for ideas about stdout of subprocess question. You'll need to write a new stdout to redirect stdout to the textwidget, something like:

class MyStdout(object):    def __init__(self,textwidget):        self.textwidget = textwidget    def write(self,txt):        self.textwidget.insert(END,txt)sys.stdout = MyStdout(mytextwidget)

but I would recommend reading other examples where people have achieved this.