如何在python中创建一个从QObject派生的抽象基类

问题描述

我正在尝试为接口创建一个抽象基类，但我需要它从 QObject 派生以用于信号和插槽.我的类定义如下所示:

I'm trying to create an abstract base class for an interface, but I need it to derive from QObject for signals and slots. My class definition looks like this:

import abc
from PyQt5.QtCore import QObject

class interface_class(abc.ABC, QObject):
    pass

它失败了:

TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases

有什么想法吗?

谢谢

推荐答案

基于多继承元类冲突

试试

import abc
from PyQt5.QtCore import QObject, pyqtWrapperType

class FinalMeta(pyqtWrapperType, abc.ABCMeta):
    pass

class interface_class(QObject, metaclass=FinalMeta):
    pass

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