#!/usr/bin/env python
# -*- coding:utf8 -*-
import sys
from PyQt4 import QtCore, QtGui
class SimpleCheckBox(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.grid = QtGui.QVBoxLayout(self)
        self.list_check = ['1', '2', '3']
        self.checkbox_one = QtGui.QCheckBox(self.list_check[0])
        self.checkbox_two = QtGui.QCheckBox(self.list_check[1])
        self.checkbox_three = QtGui.QCheckBox(self.list_check[2])
        self.label = QtGui.QLabel("Label")
        self.button = QtGui.QPushButton("Button")
        self.grid.addWidget(self.checkbox_one, 0)
        self.grid.addWidget(self.checkbox_two, 1)
        self.grid.addWidget(self.checkbox_three,2)
        self.grid.addWidget(self.label, 3)
        self.grid.addWidget(self.button, 4)
        self.connect(self.button, QtCore.SIGNAL('clicked()'),
                     self.printer)
    def printer(self):
        text = ''
        if self.checkbox_one.isChecked():
           text += self.list_check[0]
        if self.checkbox_two.isChecked():
           text += self.list_check[1]
        if self.checkbox_three.isChecked():
           text += self.list_check[2]
        self.label.setText(text)
if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    myapp = SimpleCheckBox()
    myapp.show()
    sys.exit(app.exec_())

import sys
from PyQt4 import QtGui
class Base(QtGui.QWidget):
    def __init__(self):
        super(Base, self).__init__()
        self.startUW()
    def startUW(self):
        self.vbox = QtGui.QVBoxLayout()
        self.checkboxItem()
        self.vbox.addStretch(1)
        button = QtGui.QPushButton("Show", self)
        button.clicked.connect(self.showItem)
        self.lab = QtGui.QLabel("Ничего не выбрано!", self)
  
        self.vbox.addWidget(button, 3)
        self.vbox.addWidget(self.lab, 4)
        self.setWindowTitle("Select Item Printer")
        self.setFixedSize(250, 250)
        self.setLayout(self.vbox)
        self.show()
    def checkboxItem(self):
        array = ["Пункт 1", "Пункт 2", "Пункт 3"]
        self.check = []
        index = 0
        
        for item_name in array:
            self.check.append(QtGui.QCheckBox(item_name, self))
            self.vbox.addWidget(self.check[index], index)
            index += 1
    def showItem(self):
        lib = ""
        index = 0
        while index != 3:
            
            if self.check[index].isChecked():     
                lib = lib  + " " + self.check[index].text()
                index += 1
            else:
                index += 1
            self.lab.setText(lib)
        
def main():
    app = QtGui.QApplication(sys.argv)
    gui = Base()
    sys.exit(app.exec_())
if __name__ == "__main__":
    main()