def setLogo(self):
    try:
        if ~(os.path.exists("C:\\Logo.ico")):
            url = "https://gitee.com/xdd1997/Download-or-Picture/raw/master/Logo.ico"
            filepath = "C:\\Logo.ico"
            urllib.request.urlretrieve(url, filepath)
        self.setWindowIcon(QIcon('C:\\Logo.ico'))
    except:
        print("设置图标失败")