import subprocess
PIPE = subprocess.PIPE
def turn_off():
    print ("Please, enter time")
    waitime=input()
    time = waitime*60
    cmd = 'shutdown -s -t ' +str(time)
    p = subprocess.Popen(cmd, shell = True)
    return
def turn_off_abort():
    cmd_abort = 'shutdown -a'
    p = subprocess.Popen(cmd_abort, shell = True)
    return

import sys
from PyQt4 import QtGui, QtCore
import main
class sleep_buttn(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Icon')
        sleep = QtGui.QPushButton('sleep', self)
        sleep.setGeometry(10, 10, 60, 35)
        self.connect(sleep, QtCore.SIGNAL('clicked()'),
            QtGui.qApp, QtCore.SLOT(main.turn_off()))
app = QtGui.QApplication(sys.argv)
sl = sleep_buttn()
sl.show()
sys.exit(app.exec_())

from Tkinter import *
import main
root = Tk()
btn = Button(root,                 
            text="turn off",     
             width=30,height=5,     
             bg="white",fg="green") 
btn.bind("<Button-1>", main.turn_off())    
btn.pack()                         
root.mainloop()

self.connect(sleep, QtCore.SIGNAL('clicked()'),
            QtGui.qApp, QtCore.SLOT(main.turn_off()))

import sys
from PyQt4 import QtGui, QtCore
class Sleeper(QtGui.QWidget):
    def __init__(self):
        QtGui.QWidget.__init__(self)
        #self.time = 0
        self.setGeometry(200, 200, 200, 150)
 
        self.label = QtGui.QLineEdit(self)# как получить значение от сюда, его введут ручками чтобы потом его передать функции
        
        self.label.setGeometry(70, 20, 60, 20) 
app = QtGui.QApplication(sys.argv)
Sleeper = Sleeper()
Sleeper.show()
sys.exit(app.exec_())