PySide:'PySide.QtCore.Signal“”object没有属性“emit”

Question

使用以下代码，我在尝试发出信号时遇到错误（'PySide.QtCore.Signal' object has no attribute 'emit'）：

#!/usr/bin/env python

from PySide import QtCore

class TestSignalClass(QtCore.QObject):
    somesignal = QtCore.Signal()

    def speak_me(self):
        self.speak.emit()
    def __init__(self):
        try:
            self.somesignal.emit()
        except Exception as e:
            print("__init__:")
            print(e)

t = TestSignalClass()

我能做些什么来解决这个问题？在

Answer 1

这里的问题是，尽管类正确地继承了QtCore.QObject，但它不调用父级的构造函数。这个版本运行良好：

#!/usr/bin/env python

from PySide import QtCore

class TestSignalClass(QtCore.QObject):
    somesignal = QtCore.Signal()

    def speak_me(self):
        self.speak.emit()
    def __init__(self):
        # Don't forget super(...)!
        super(TestSignalClass, self).__init__()
        try:
            self.somesignal.emit()
        except Exception as e:
            print("__init__:")
            print(e)

t = TestSignalClass()