Python-сообщество

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

from PyQt4.QtCore import *
from PyQt4.QtGui import *
from random import randint
from time import sleep

class Thread(QThread):
    def __init__(self, parent):
        QThread.__init__(self, parent)
        self.parent = parent
    def run(self):
        for i in range(100):
            self.parent.emit(SIGNAL("set_value(int,int)"), 0, i)
            self.parent.emit(SIGNAL("set_value(int,int)"), 1, 99-i)
            self.parent.emit(SIGNAL("set_value(int,int)"), 2, randint(0,99))
            sleep(0.1)

class ProgressDialog(QDialog):
    def __init__(self, parent):
        QDialog.__init__(self, parent)
        self.resize(320, 130)
        layout = QFormLayout(self)
        self.progress = []
        for i in range(3):
            egg = QProgressBar(self)
            egg.setRange(0,99)
            layout.addRow("progress %i" % i, egg)
            self.progress.append(egg)
        self.connect(self, SIGNAL("set_value(int,int)"), self.set_value)
        th = Thread(self)
        th.start()
        
    def set_value(self, p, v):
        self.progress[p].setValue(v)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    ProgressDialog(None).exec_()