使用pyside2实现带signal的线程池

可以使用QThreadPool类来实现带signal的线程池，具体实现可以参考以下代码：

from PySide2.QtCore import QObject, QRunnable, QThreadPool, Signal

class WorkerSignals(QObject):
    finished = Signal()
    result = Signal(object)

class Worker(QRunnable):
    def __init__(self, func, *args, **kwargs):
        super(Worker, self).__init__()
        self.func = func
        self.args = args
        self.kwargs = kwargs
        self.signals = WorkerSignals()

    def run(self):
        result = self.func(*self.args, **self.kwargs)
        self.signals.result.emit(result)
        self.signals.finished.emit()

def my_func():
    # do some work here
    return "result"

pool = QThreadPool()
worker = Worker(my_func)
worker.signals.result.connect(print)
pool.start(worker)

这段代码实现了一个带signal的线程池，其中Worker类继承自QRunnable，可以在run方法中执行需要在子线程中执行的任务。WorkerSignals类定义了两个signal，分别是finished和result，用于在任务完成时发射信号。在主线程中，可以通过连接result信号来获取任务的结果。