!/usr/bin/env python
def gameframe(sizex):
     namefr = QtGui.QWidget()
     namefr.setFixedSize(sizex, 450)
     namefr.setWindowTitle('title')
     namefr.show()
     app.connect(namefr)
 
def main():
	
	return 0
if __name__ == '__main__':
	main()
import sys
from PyQt4 import QtGui, QtCore
app = QtGui.QApplication(sys.argv)
app.setStyleSheet(open("./style.qss","r").read())
widget = QtGui.QWidget()
widget.setFixedSize(650, 450)
widget.setWindowTitle('title')
widget.show()
            
startg = QtGui.QPushButton(u'Старт', widget)
startg.setGeometry(450,110, 100, 35)            
startg.show()
QtCore.QObject.connect( startg, QtCore.SIGNAL("clicked()"),app, QtCore.SLOT("gameframe(650)") )
startg.setToolTip(u'Начать новую игру')
               
                               
sys.exit(app.exec_())
import sys
from PyQt4 import QtGui

QtCore.QObject.connect( startg, QtCore.SIGNAL("clicked()"), app, QtCore.SLOT("gameframe(650)") )