class MainChangeMatch(qtw.QMainWindow):
    def __init__(self):
        qtw.QMainWindow.__init__(self)
        self.ui = Ui_ChangeMatch()
        self.ui.setupUi(self)
        self.show()
        self.ui.pushButton.clicked.connect(self.changematch)
        self.ui.pushButton_2.clicked.connect(exit)

    def changematch(self):
        msg = 'ChangeMatch'
        client.send(bytes(msg, "utf-8"))
        sleep(0,1)
        ID=self.ui.lineEdit.text()
        Score=self.ui.lineEdit_2.text()
        client.send(bytes(ID, "utf-8"))
        client.send(bytes(Score, "utf-8"))

        data = client.recv(BUFSIZ)
        data = data.decode("utf-8")
        if data == "Change Match Failed!":
            print(msg)
            #do sth
        elif data == "Change Match Successfully!":
            print (msg)
            #do sth