import sys
from PyQt4 import QtCore,QtGui,uic

class TestWindow (QtGui.QMainWindow):
    def __init__(self):
        QtGui.QMainWindow.__init__(self)
        self.ui = uic.loadUi("test.ui")
        QtCore.QMetaObject.connectSlotsByName(self)
        #self.ui.maxButton.clicked.connect(self.on_maxButton_clicked)
        self.ui.show()

    @QtCore.pyqtSlot()
    def on_maxButton_clicked(self):
        print("max!")
    
        
app = QtGui.QApplication(sys.argv)
window = TestWindow()
sys.exit(app.exec_())