QThreadPool

from PySide2.QtCore import QThread, QThreadPool, QRunnable
from PySide2.QtWidgets import QApplication
import time
class Task(QRunnable):
    def __init__(self, a, b):
        super().__init__()
        self.a = a
        self.b = b
    def run(self):
        print(f"hello world from {QThread.currentThread()}")
        ret = self.a + self.b
        print(f"a+b={ret}")
        for i in range(ret):
            print(i)
            time.sleep(0.5)
if __name__ == '__main__':
    app = QApplication()
    task1 = Task(1,2)
    # 从线程池中取一个线程去执行任务
    QThreadPool.globalInstance().start(task1)
    task2 = Task(2,3)
    # 从线程池中取一个线程去执行任务
    QThreadPool.globalInstance().start(task2)
    app.exec_()