pyqt 多线程 emit 代码示例

Sure, here's an example code of using PyQt with multiple threads and emitting signals:

from PyQt5.QtCore import QObject, pyqtSignal, QThread

class Worker(QObject):
    finished = pyqtSignal()  # define a Pyqt signal

    def __init__(self):
        super().__init__()

    def run(self):
        # do some work here
        self.finished.emit()  # emit the signal

class MyThread(QThread):
    def __init__(self):
        super().__init__()

    def run(self):
        self.worker = Worker()
        self.worker.finished.connect(self.cleanup)
        self.worker.run()

    def cleanup(self):
        self.worker.deleteLater()

In this example, a `Worker` class is defined that does some work, and emits a `finished` signal when done. Then, a `MyThread` class is defined that inherits from `QThread` and runs the `Worker` in a separate thread. When the `finished` signal is emitted, the `cleanup` function is called to delete the worker object. Keep in mind that this is just a basic example, and more complex scenarios may require additional consideration and modifications.