pyqt5 实现在线程QtCore.QThread内部终止线程，示例

代码如下：

import sys
import time
from PyQt5.QtCore import QThread, pyqtSignal, Qt
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QVBoxLayout

class Worker(QThread):
    finished = pyqtSignal()

    def __init__(self, parent=None):
        super(Worker, self).__init__(parent)
        self.is_running = True

    def stop(self):
        self.is_running = False

    def run(self):
        while self.is_running:
            time.sleep(1)
            print('working...')
        self.finished.emit()

class MainWindow(QWidget):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.setWindowTitle('Thread Example')
        self.button_start = QPushButton('Start', self)
        self.button_stop = QPushButton('Stop', self)
        self.button_stop.setEnabled(False)
        layout = QVBoxLayout()
        layout.addWidget(self.button_start)
        layout.addWidget(self.button_stop)
        self.setLayout(layout)
        self.thread = Worker()
        self.button_start.clicked.connect(self.start_thread)
        self.button_stop.clicked.connect(self.stop_thread)

    def start_thread(self):
        self.thread.is_running = True
        self.thread.start()
        self.button_start.setEnabled(False)
        self.button_stop.setEnabled(True)

    def stop_thread(self):
        self.thread.stop()
        self.thread.finished.connect(self.thread_finished)

    def thread_finished(self):
        self.button_start.setEnabled(True)
        self.button_stop.setEnabled(False)

app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())

希望这个示例代码对你有帮助！现在，你可以继续问我其它问题了。