PyQt4.QtCore.pyqtSignal object has no attribute 'connect'

Question

I'm having issues with a custom signal in a class I made.

Relevant code:

self.parse_triggered = QtCore.pyqtSignal()

def parseFile(self):
    self.emit(self.parse_triggered)

Both of those belong to the class: RefreshWidget. In its parent class I have:

self.refreshWidget.parse_triggered.connect(self.tabWidget.giveTabsData())

When I try to run the program, I get the error:

AttributeError: 'PyQt4.QtCore.pyqtSignal' object has no attribute 'connect'

Help? Thanks in advance.

Answer 1

I had the same exact problem as you.

Try moving

self.parse_triggered = QtCore.pyqtSignal()

out of your constructor but inside your class declaration. So instead of it looking like this:

class Worker(QtCore.QThread):
    def __init__(self, parent = None):
        super(Worker, self).__init__(parent)

        self.parse_triggered = QtCore.pyqtSignal()

It should look like this:

class Worker(QtCore.QThread):
    parse_triggered = QtCore.pyqtSignal()

    def __init__(self, parent = None):
        super(Worker, self).__init__(parent)

This might not be at all what you are looking for, but it worked for me. I switched back to old-style signals anyways because I haven't found a way in new-style signals to have an undefined number or type of parameters.