pyqt中通过两个按钮利用线程分别启动功能包，并利用一个按钮结束线程（python)(需要具体示例

)很高兴回答你的问题！下面是一个例子，通过两个按钮分别启动不同的线程，一个按钮终止所有线程：

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

class Worker(QThread):
    finished = pyqtSignal()

    def __init__(self, name):
        super().__init__()
        self.name = name
        self.running = False

    def run(self):
        self.running = True
        while self.running:
            print(f"{self.name} is running")
            time.sleep(1)
        self.finished.emit()

    def stop(self):
        self.running = False

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.btn1 = QPushButton('Start Thread 1')
        self.btn2 = QPushButton('Start Thread 2')
        self.btnStop = QPushButton('Stop All Threads')
        self.btnStop.setEnabled(False)

        vbox = QVBoxLayout()
        vbox.addWidget(self.btn1)
        vbox.addWidget(self.btn2)
        vbox.addWidget(self.btnStop)
        self.setLayout(vbox)

        self.btn1.clicked.connect(lambda: self.startThread("Thread 1"))
        self.btn2.clicked.connect(lambda: self.startThread("Thread 2"))
        self.btnStop.clicked.connect(self.stopAllThreads)

        self.show()

    def startThread(self, name):
        worker = Worker(name)
        worker.finished.connect(worker.deleteLater)
        worker.finished.connect(self.threadFinished)
        worker.start()
        self.btnStop.setEnabled(True)

    def threadFinished(self):
        if not any(isinstance(w, Worker) for w in self.children()):
            self.btnStop.setEnabled(False)

    def stopAllThreads(self):
        for w in self.children():
            if isinstance(w, Worker):
                w.stop()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec_())

希望这个例子对你有所帮助！如果你有更多的问题，欢迎继续提问。