def __init__(self, parent=None): QtGui.QWidget.__init__(self, parent) self.ui = Ui_MainWindow() self.ui.setupUi(self) # user code here self.Players = dict() self.PlayersL = list() self.ui.btnAddplayer.released.connect(self.btnAddplayer_clicked) self.ui.btnStart.released.connect(self.btnStart_clicked) self.ui.tblRanking.setColumnWidth(0, 140) self.ui.tblRanking.horizontalHeader().setResizeMode( 1, QtGui.QHeaderView.Stretch)