import sys
from PyQt4 import QtGui, QtCore, uic
import random
class Window(QtGui.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__()
        QtGui.QWidget.__init__(self, parent)
        QtGui.QMainWindow.__init__(self)
    def paintEvent(self, event):
        paint = QtGui.QPainter(self)
        pen = QtGui.QPen(QtCore.Qt.black, 1, QtCore.Qt.SolidLine)
        paint.setPen(pen)
        for i in range(len(field)+1):
            paint.drawLine(150, (i+1)*24+10, 540, (i+1)*24+10)
        for i in range(len(field[0])+1):
            paint.drawLine((i+1)*30+120, 34, (i+1)*30+120, 562)
        color = QtGui.QColor(0, 0, 0)
        color.setNamedColor('#d4d4d4')
        paint.setPen(color)
        paint.setBrush(QtGui.QColor(255, 0, 0, 100))
        self.drawrectangles(paint)
        paint.end()
    def drawrectangles(self, paint):
        for i in range(len(field)):
            for j in range(len(field[i])):
                if field[i][j] == 1:
                    paint.drawRect((j+1)*30+122, (i+1)*24+12, 26, 20)
app = QtGui.QApplication(sys.argv)
wd = Window()
wd.show()  
sys.exit(app.exec_())

import sys
from PyQt4 import QtGui, QtCore, uic
import random
field = [[1,1,1,1,1,1,1,1,1,1,1,1,1],[1,1,1,1,1,1,1,1,1,1,1,1,1],[1,1,1,1,1,1,1,1,1,1,1,1,1],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0],[0,1,0,1,0,1,0,1,0,1,0,1,0]]
class Window(QtGui.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__()
        QtGui.QWidget.__init__(self, parent)
        QtGui.QMainWindow.__init__(self)
        self.setGeometry(300, 100, 250, 150)
        self.setFixedHeight(600)
        self.setFixedWidth(600)
        self.center()
        self.setWindowTitle('Пентикс')
        self.setWindowIcon(QtGui.QIcon('ico.png'))
        label = QtGui.QLabel('Следующая фигура:', self)
        label.move(15, 10)
        Figure(self)
        Button(self)
    def drawall(self):
        for i in range(len(field)):
            for j in range(len(field[0])):
                field[i][j] = random.randint(0,1)
        return field
    def paintEvent(self, event):
        paint = QtGui.QPainter(self)
        pen = QtGui.QPen(QtCore.Qt.black, 1, QtCore.Qt.SolidLine)
        paint.setPen(pen)
        for i in range(len(field)+1):
            paint.drawLine(150, (i+1)*24+10, 540, (i+1)*24+10)
        for i in range(len(field[0])+1):
            paint.drawLine((i+1)*30+120, 34, (i+1)*30+120, 562)
        color = QtGui.QColor(0, 0, 0)
        color.setNamedColor('#d4d4d4')
        paint.setPen(color)
        paint.setBrush(QtGui.QColor(255, 0, 0, 100))
        self.drawrectangles(paint)
        paint.end()
    def drawrectangles(self, paint):
        for i in range(len(field)):
            for j in range(len(field[i])):
                if field[i][j] == 1:
                    paint.drawRect((j+1)*30+122, (i+1)*24+12, 26, 20)
    def center(self):
        screen = QtGui.QDesktopWidget().screenGeometry()
        size = self.geometry()
        self.move((screen.width()-size.width())/2, (screen.height()-size.height())/2)
class Figure(QtGui.QWidget):
    def __init__(self, parent):
        QtGui.QWidget.__init__(self, parent)
class Button(QtGui.QWidget):
    def __init__(self, parent):
        QtGui.QWidget.__init__(self, parent)
        quit = QtGui.QPushButton('Выход', self)
        quit.setGeometry(10, 550, 70, 35)
        self.connect(quit, QtCore.SIGNAL('clicked()'),
            QtGui.qApp, QtCore.SLOT('quit()'))
        pause = QtGui.QPushButton('Пауза', self)
        pause.setGeometry(10,500,70,35)
        self.connect(pause, QtCore.SIGNAL("clicked()"),
            self.pause)
        newGame = QtGui.QPushButton('Новая игра', self)
        newGame.setGeometry(10,450,70,35)
        self.connect(newGame, QtCore.SIGNAL("clicked()"),
            self.newGame)
    def pause(self):
        print('пауза')
        Window().drawall()
    def newGame(self):
        print('Новая игра')
        
app = QtGui.QApplication(sys.argv)
wd = Window()
wd.show()  
sys.exit(app.exec_())

self.timer = QtCore.QTimer(self)
self.connect(self.timer, QtCore.SIGNAL("timeout()"), self.update)
self.timer.start(100)