PyQt5多线程的执行和停止-Toy模板网

这篇具有很好参考价值的文章主要介绍了PyQt5多线程的执行和停止。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

参考资料：哔哩哔哩 pyqt5 thread多线程示例
以下代码来自该视频，我自己手动实现了一下，当作一个模板来学习，欢迎大家一起学习。

运行示例

pyqt5 qthread终止线程,项目,qt,ui,python,pyqt5
三个进程同时执行，并且可以单独控制暂停和继续执行。
以下给出运行代码：

from PyQt5 import QtCore,QtWidgets,QtGui
from PyQt5 import uic
import sys,time

class THREAD_APP(QtWidgets.QMainWindow):
    def __init__(self):
        QtWidgets.QMainWindow.__init__(self)
        self.ui = uic.loadUi('thread.ui',self)

        self.thread={}
        self.pushButton.clicked.connect(self.start_worker_1)
        self.pushButton_2.clicked.connect(self.start_worker_2)
        self.pushButton_3.clicked.connect(self.start_worker_3)
        self.pushButton_4.clicked.connect(self.stop_worker_1)
        self.pushButton_5.clicked.connect(self.stop_worker_2)
        self.pushButton_6.clicked.connect(self.stop_worker_3)

    def start_worker_1(self):
        self.thread[1] = ThreadClass(parent=None,index=1)
        self.thread[1].start()
        self.thread[1].any_signal.connect(self.my_function)
        self.pushButton.setEnabled(False)

    def start_worker_2(self):
        self.thread[2] = ThreadClass(parent=None, index=2)
        self.thread[2].start()
        self.thread[2].any_signal.connect(self.my_function)
        self.pushButton_2.setEnabled(False)

    def start_worker_3(self):
        self.thread[3] = ThreadClass(parent=None,index=3)
        self.thread[3].start()
        self.thread[3].any_signal.connect(self.my_function)
        self.pushButton_3.setEnabled(False)

    def stop_worker_1(self):
        self.thread[1].stop()
        self.pushButton.setEnabled(True)

    def stop_worker_2(self):
        self.thread[2].stop()
        self.pushButton_2.setEnabled(True)

    def stop_worker_3(self):
        self.thread[3].stop()
        self.pushButton_3.setEnabled(True)

    def my_function(self,counter):
        cnt = counter
        index = self.sender().index
        if index == 1:
            self.progressBar.setValue(cnt)
        if index == 2:
            self.progressBar_2.setValue(cnt)
        if index == 3:
            self.progressBar_3.setValue(cnt)

class ThreadClass(QtCore.QThread):
    any_signal = QtCore.pyqtSignal(int)
    def __init__(self,parent=None,index=0):
        super(ThreadClass,self).__init__(parent)
        self.index = index
        self.is_running = True
    def run(self):
        print('Starting thread...',self.index)
        cnt=0
        while(True):
            cnt+=1
            if cnt==99: cnt=0
            time.sleep(0.01)
            self.any_signal.emit(cnt)

    def stop(self):
        self.is_running=False
        print('stopping thread...',self.index)
        self.terminate()


app=QtWidgets.QApplication(sys.argv)
mainWindow = THREAD_APP()
mainWindow.show()
sys.exit(app.exec_())