runit

#!/usr/bin/env python3
# tkinter implementation of gnome's Alt+F2 run box

from tkinter import *
from tkinter import ttk
from os import system
import sys
root = Tk()
root.title('RUNIT')

def runit(*args):
    root.destroy()
    system(cmd.get())


mainframe = ttk.Frame(root, padding='3 3 12 12')
mainframe.grid(column=0, row=0, sticky=(N,W,E,S))
root.columnconfigure(0, weight=1)
root.rowconfigure(0, weight=1)
ttk.Button(mainframe, text='QUIT', command=root.quit).grid(row=1,column=1, sticky=(S,E))
ttk.Button(mainframe, text='OK',command=lambda:runit()).grid(row=1,column=0, sticky=(S,W))

cmd = StringVar()
cmd_entry = ttk.Entry(mainframe, width=10, textvariable=cmd)
cmd_entry.grid(column=0, row=0, columnspan=2)

for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5)
cmd_entry.focus()
root.bind('<Return>',runit)
root.bind('<Escape>',exit)
root.mainloop()