关于#pyqt5#的线程问题，如何解决？

Question

现在有一个纯数字的列表，我想让它们各自进行倒计时并且输出在UI界面上

t_list = [26,33,10,18,45,6]

我是这样写的

from PyQt5.QtCore import QThread,pyqtSignal
from PyQt5 import QtCore,QtWidgets
import time

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(553, 588)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(470, 210, 75, 23))
        self.pushButton.setObjectName("pushButton")

        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 553, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.List = QtWidgets.QTextBrowser(self.centralwidget)
        self.List.setGeometry(20,20,200,300)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
        self.pushButton.clicked.connect(lambda :self.tist())
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "开始"))

    def tist(self):
        self.t_list = [26,33,10,18,45,6]#而且列表的长度也不是固定的
        self.starts = qthraed()#倒计时线程

        for i in range(len(self.t_list)):
            self.starts.myNum = self.t_list[i]
            self.starts.start()
            self.starts.sinOut.connect(self.List.append)
class qthraed(QThread):
    sinOut = pyqtSignal(str)

    def __init__(self, parent=None):
        super(qthraed, self).__init__(parent)
        self.Tist = True
        self.num = 0
        self.myNum = 1

    def __del__(self):
        self.Tist = False
        self.wait()

    def run(self):

        while self.myNum>= 0:
            self.sinOut.emit(str(self.myNum))
            self.myNum -= 1
            time.sleep(1)


if __name__ =="__main__":
    import  sys
    app = QtWidgets.QApplication(sys.argv)
    w = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(w)
    w.show()
    sys.exit(app.exec_())

输出的结果是用列表的最后一个数字同时进行倒计时

我最终想要的结果是各自进行倒计时并且输出在UI界面上

Answer 1

要开多线程，这部分这样改：

def tist(self):
        self.t_list = [26,33,10,18,45]#而且列表的长度也不是固定的
        self.starts = []
        for i in range(len(self.t_list)):            
            self.starts.append(qthraed())#倒计时线程
            self.starts[i].myNum = self.t_list[i]
            self.starts[i].start()
            self.starts[i].sinOut.connect(self.List.append)

如果显示在多个控件中可以如下：

#--*--coding:utf-8 --*--

from PyQt5.QtCore import QThread,pyqtSignal
from PyQt5 import QtCore,QtWidgets
import time

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(553, 588)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(470, 210, 75, 23))
        self.pushButton.setObjectName("pushButton")

        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 553, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.LL = []
        self.List = QtWidgets.QTextBrowser(self.centralwidget)
        self.List.setGeometry(20,20,50,300)
        self.List1 = QtWidgets.QTextBrowser(self.centralwidget)
        self.List1.setGeometry(100,20,50,300)
        self.List2 = QtWidgets.QTextBrowser(self.centralwidget)
        self.List2.setGeometry(200,20,50,300)        
        self.LL.append(self.List)
        self.LL.append(self.List1)
        self.LL.append(self.List2)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
        self.pushButton.clicked.connect(lambda :self.tist())
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "开始"))

    def tist(self):
        self.t_list = [26,33, 45]#而且列表的长度也不是固定的
        self.starts = []
        for i in range(len(self.t_list)):            
            self.starts.append(qthraed())#倒计时线程
            self.starts[i].myNum = self.t_list[i]
            self.starts[i].start()
            self.starts[i].sinOut.connect(self.LL[i].append)
class qthraed(QThread):
    sinOut = pyqtSignal(str)

    def __init__(self, parent=None):
        super(qthraed, self).__init__(parent)
        self.Tist = True
        self.num = 0
        self.myNum = 1

    def __del__(self):
        self.Tist = False
        self.wait()

    def run(self):

        while self.myNum>= 0:
            self.sinOut.emit(str(self.myNum))
            self.myNum -= 1
            time.sleep(1)


if __name__ =="__main__":
    import  sys
    app = QtWidgets.QApplication(sys.argv)
    w = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(w)
    w.show()
    sys.exit(app.exec_())