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PySide2 QRunnable and QThreadPool


Examples

import sys

from PySide2.QtWidgets import QMainWindow, QApplication
from PySide2.QtCore import (
QObject,
QThread,
QRunnable,
QThreadPool,
Slot,
Signal,
)

from ui_mainwindow import Ui_MainWindow


class TaskSignal(QObject):
"""
QRunnable에서 사용할 시그널
"""

finished = Signal(bool)


class Task(QRunnable):
_taskSignal = TaskSignal()
finished = _taskSignal.finished

var = False

def run(self):
"""
잠시 중단하는 경우 QThread.msleep() 사용
"""
QThread.msleep(5000)

self.finished.emit(self.var)


class MainWindow(QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
self.pushButton.setText("버튼 1")

self.pushButton.clicked.connect(self.startTask)

self.task = Task()
self.task.setAutoDelete(False)
self.task.finished.connect(self.taskFinished)

def startTask(self):
if self.task.var:
self.task.var = False
else:
self.task.var = True

"""
task 실행
"""
QThreadPool.globalInstance().start(self.task)

"""
버튼 비활성화
"""
self.pushButton.setEnabled(False)

@Slot(bool)
def taskFinished(self, is_success):
if is_success:
self.textBrowser.append("success")
else:
self.textBrowser.append("fail")

self.pushButton.setEnabled(True)


if __name__ == "__main__":
app = QApplication(sys.argv)
mainWindow = MainWindow()
mainWindow.show()
sys.exit(app.exec_())

Reference