# -*- coding: UTF-8 -*-

import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *


class mainWindow(QWidget):
    def __init__(self, parent=None):
        super(mainWindow, self).__init__(parent)
        button = QPushButton(u'弹出新窗口', self)
        self.slavewindow = slaveWindow()
        self.connect(button, SIGNAL('clicked()'), self.slavewindow.show)


class slaveWindow(QWidget):
    def __init__(self, parent ...