[FIXED] PySide QObject signals not getting received

Issue

I want to build a wrapper for my API using QNetworkAccessManager and the asynchronous fetching with the get() method. I create a subclass of QObject, pass the parent class into __init__ and call super() and the signal this_should_emit never gets received.

# main.py

from PySide6.QtWidgets import QMainWindow

from api.initialize.version import GetVersion
from ui_build.main import Ui_MainWindow


class MainWindow(QMainWindow):
    # Window Setup
    def __init__(self):
        super(MainWindow, self).__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        get_version = GetVersion(parent=self)
        get_version.this_should_emit.connect(self.verified_connection)

    def verified_connection(self):
        print("verified")

# version.py

import json
from PySide6.QtCore import QUrl, QObject, QEventLoop, Signal
from PySide6.QtNetwork import QNetworkRequest, QNetworkAccessManager


class GetVersion(QObject):
    this_should_emit = Signal()

    def __init__(self, parent=None):
        super(GetVersion, self).__init__(parent)
        print(parent)
        loop = QEventLoop()

        manager = QNetworkAccessManager()
        manager.finished.connect(self.get_reply)

        reply = manager.get(QNetworkRequest(QUrl("http://localhost:5000/v1/test")))
        reply.finished.connect(loop.exit)
        loop.exec()

        self.this_should_emit.emit()

    def __del__(self):
        print("deleted")

    def get_reply(self, n):
        print('got reply')
        temp = bytes(n.readAll()).decode("utf8")
        temp = json.loads(temp)
        print(temp)
        self.this_should_emit.emit()

Solution

The answer to my solution wasn't trying to do any trickery with another QEventLoop, but rather making sure the QNetworkAccessManager had access to the QDialog as a parent.

Answered By - hlafaille