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PySide2 中的 QtCore.QObject.connect 不像 PyQt4 中那样工作。信号订购接缝是问题所在。它是已知的错误还是 PySide2 不支持的功能？任何帮助将不胜感激，谢谢你，埃里克

工作示例：（抱歉，我无法缩短说明问题的时间）

通常 PySide2 下的输出抱怨信号和槽没有被排序。

QMetaObject 'BaseEditor' 中的信号和槽没有正确排序，这可能会导致问题。

  1. 信号 initFirstTimeDONE(object)

  2. 插槽 aclick(object)

  3. 信号 optionChangeDONE(object)

import os
import sys
import types
from collections import namedtuple

try:
    from PySide2 import QtCore,QtWidgets,QtGui
    SINGLE_ARG = 'object'
except:
    from PyQt4 import QtCore,QtGui 
    from PyQt4 import QtGui as QtWidgets
    SINGLE_ARG = 'PyQt_PyObject'

######################################################################  
class baseSig(object):
    """ helper mixing for signal name and signature """
    @property
    def asTuple(self):
        return self.name,self.arg

class signalInfoT(namedtuple("signalInfo", 
                         "name arg signature"),baseSig):
    __slots__ = ()

def signalInfo(name, arg, signature=None):
    if signature == None:
        return signalInfoT(name,arg,"%s(%s)" % (name,arg))
    else:
        return signalInfoT(name,arg,signature)


# declare 2 signalInfo
OPTION = signalInfo('optionChange',SINGLE_ARG)
INITF = signalInfo('initFirstTime',SINGLE_ARG)


######################################################################
class Msg(object):
    """ Signal argument type """
    def __init__(self,a):
        self.a = a


######################################################################
class BaseEditor(QtCore.QObject):
    """ object that centralized all the signal declaration (as a hub)
        and in which widget can register connection (request_connect)
    """
    def __init__(self,**args):
        super(BaseEditor,self).__init__()
        self._Assign = {}
        self.declare_signalT(INITF.asTuple, self.initFirst, SINGLE_ARG)
        self.declare_signalT(OPTION.asTuple, self.aclick, SINGLE_ARG)

    def declare_signalT(self,sig,functMethod,cbSignature=""):
        self.declare_signal(sig[0],sig[1],functMethod,cbSignature)

    def declare_signal(self,sName,sSignature,functMethod,cbSignature=""):

        self._Assign[sName] = {
                "signal":QtCore.SIGNAL("%s(%s)" % (sName,sSignature)),
                "methodR": functMethod,
                "signalDone": QtCore.SIGNAL("%sDONE(%s)" % (sName,
                                                        cbSignature))
                }

    def request_connect(self,emitter,sName,canEmit,callerCB = None):
        """Main method to register signal"""

        if canEmit:
            x = self.connect(emitter,self._Assign[sName]["signal"],self._Assign[sName]["methodR"])
        if callerCB != None:
            x = emitter.connect(self,self._Assign[sName]["signalDone"],callerCB)

    def initFirst(self, msg):
        self.emit(self._Assign[INITF.name]["signalDone"],msg)
    def aclick(self,msg):
        print "BaseEditor: this is not called", msg
        self.emit(self._Assign[OPTION.name]["signalDone"],msg)

######################################################################
class AWidget(QtWidgets.QWidget):
    def __init__(self,parent,**argv):
        super(AWidget,self).__init__(parent)
        self.setObjectName("ll%s" % id(self))
        verticalLayout = QtWidgets.QHBoxLayout(self)
        self.pushButton = QtWidgets.QPushButton("Hey")
        self.lineEdit = QtWidgets.QLineEdit()
        verticalLayout.addWidget(self.pushButton)
        verticalLayout.addWidget(self.lineEdit)
        self.pushButton.clicked.connect(self.on_click)
        editor = argv.get('editor')
        editor.request_connect(self, INITF.name, False, self.init_first)
        editor.request_connect(self, OPTION.name, True,self.ahaha)

    def init_first(self,msg):
        self.lineEdit.setText("%s" % msg.a)

    def on_click(self):
        msg = Msg(3)
        self.emit(QtCore.SIGNAL(OPTION.signature),msg)

    def ahaha(self,msg):
        print "ahaha: this is never called with Qt5", msg
        self.lineEdit.setText("%s" % msg.a)

#####################################################################
class ShotInfoMain(QtWidgets.QWidget):
    def __init__(self, parent,**argv):
        super(ShotInfoMain, self).__init__(parent)
        verticalLayout = QtWidgets.QVBoxLayout(self)
        self.setObjectName("shot%s" % id(self))
        w1 = AWidget(None,**argv)
        verticalLayout.addWidget(w1)
        editor = argv.get('editor')
        editor.request_connect(self,INITF.name,False,self.initFirstTime)

    def initFirstTime(self, msg):
        print  "ShotInfoMain:",msg

################################################################
class BrowserApp(QtWidgets.QMainWindow):

    def __init__(self, parent, **argv):

        super(BrowserApp, self).__init__(parent)
        editor = argv.get('editor')
        self.setObjectName("Browsert%s" % id(self))
        ll = ShotInfoMain(None,**argv)
        self.setCentralWidget(ll)
        editor.request_connect(self, INITF.name, True)
        msg = Msg(id(self))
        self.emit(QtCore.SIGNAL(INITF.signature), msg)

if __name__ == "__main__":
    # create a hub to where signal are send first
    ed = BaseEditor()
    # app
    app = QtWidgets.QApplication(sys.argv)
    # the mainwindow
    window = BrowserApp(None,editor=ed)

    # start
    QtWidgets.QApplication.processEvents()
    window.show()
    window.raise_()
    sys.exit(app.exec_())
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