属性错误： 'botclass'对象没有属性'loglist'

Question

class botclass(QtCore.QObject):
progressChanged = QtCore.pyqtSignal(int)
def bot(self):
example_error_message = QListWidgetItem("Error")
example_error_message.setForeground(Qt.red)
self.loglist.insertItem(0, error)

class MainPage(QMainWindow):
def __init__(self, *args, **kwargs):
QtWidgets.QWidget.__init__(self, *args, **kwargs)
loadUi("uifile.ui", self)
example_working_message = QListWidgetItem("Working")
example_working_message.setForeground(Qt.green)
self.loglist.insertItem(0, example_working_message)

self.thread = QtCore.QThread()
self.botwork = botclass()
self.botwork.moveToThread(self.thread)
self.thread.started.connect(self.botwork.bot)
self.botwork.clicked.connect(self.thread.start)

错误是"；AttributeError:"botclass"对象没有属性"loglist">

我在Python中使用PyQt5时遇到了这个错误，我该如何解决"botclass"；将与硒一起使用。

如何解决此问题？

Answer 1

您不能从另一个线程访问GUI，您必须创建一个发送文本的信号，然后在GUI中创建项目：

class BotClass(QtCore.QObject):
progressChanged = QtCore.pyqtSignal(int)
messageChanged = QtCore.pyqtSignal(str)
def bot(self):
self.messageChanged.emit("Error")

class MainPage(QMainWindow):
def __init__(self, *args, **kwargs):
QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
loadUi("uifile.ui", self)
self.add_item("Working", Qt.green)
self.bot_thread = QtCore.QThread()
self.botwork = BotClass()
self.botwork.messageChanged.connect(self.handle_message_changed)
self.botwork.moveToThread(self.bot_thread)
self.bot_thread.started.connect(self.botwork.bot)
self.<some_button>.clicked.connect(self.bot_thread.start)

def handle_message_changed(self, message):
self.add_item(message, Qt.red)
def add_item(self, message, color):
item = QListWidgetItem(message)
item.setForeground(color)
self.loglist.insertItem(0, item)

Answer 2

要解决此问题，需要在与botclass相同的类中声明loglist。应该是：

class botclass(QtCore.QObject):
def __init__(self):
self.loglist = #what you want loglist to be
progressChanged = QtCore.pyqtSignal(int)
def bot(self):
example_error_message = QListWidgetItem("Error")
example_error_message.setForeground(Qt.red)
self.loglist.insertItem(0, error)

如果loglist在类之前已经是一个变量，那么执行以下操作：

class botclass(QtCore.QObject):
def __init__(self):
global loglist
self.loglist = loglist
progressChanged = QtCore.pyqtSignal(int)
def bot(self):
example_error_message = QListWidgetItem("Error")
example_error_message.setForeground(Qt.red)
self.loglist.insertItem(0, error)

这使得self.loglist＝全局变量loglist。