I tried to use the mutex. Why did it automatically stop without an error - pyqt

Question

I tried to use the mutex. Why did it automatically stop without an error.
Running will stop automatically after a while
This is my code, which can be run directly. Please help me to see what the problem is
Is my method wrong? Is there a better way to achieve it? I don't want my interface to get stuck
`
import time
from PyQt5 import QtWidgets, QtCore
from PyQt5.QtCore import QWaitCondition, QMutex
from PyQt5.QtWidgets import QMainWindow, QMessageBox, QApplication, QDesktopWidget
from PyQt5.QtCore import pyqtSignal
import sys
from PyQt5.QtCore import QThread
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.horizontalLayout = QtWidgets.QHBoxLayout(self.centralwidget)
self.horizontalLayout.setObjectName("horizontalLayout")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout.addWidget(self.pushButton)
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setObjectName("label")
self.horizontalLayout.addWidget(self.label)
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setObjectName("pushButton_2")
self.horizontalLayout.addWidget(self.pushButton_2)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
self.label.setText(_translate("MainWindow", "TextLabel"))
self.pushButton_2.setText(_translate("MainWindow", "stop"))
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.__init2__()
def __init2__(self):
self.search_running = False
self.ui.pushButton.clicked.connect(self.search)
self.ui.pushButton_2.clicked.connect(self.stop_search)
def stop_search(self):
if self.search_running:
reply = QMessageBox.information(self, 'notice', 'Do you want to stop searching？',
QMessageBox.Yes | QMessageBox.Cancel)
if reply == QMessageBox.Yes:
self.search_thread.terminate()
self.__thread.resume()
self.search_running = False
self.ui.pushButton.setEnabled(True)
else:
QMessageBox.information(self, 'tip', 'no search！', QMessageBox.Ok)
def search(self):
if not self.search_running:
self.search_running = True
self.ui.pushButton.setEnabled(False)
self.search_thread = Search_Thread()
self.search_thread.trigger.connect(lambda i: self.c(i))
self.search_thread.complete.connect(self.search_complete)
self.search_thread.start()
def c(self, i):
self.ui.label.setText(str(i))
self.search_thread.resume()
def search_complete(self):
self.__thread.resume()
self.search_running = False
self.ui.pushButton.setEnabled(True)
class Search_Thread(QThread):
trigger = pyqtSignal(int)
complete = pyqtSignal()
mutex = QMutex()
cond = QWaitCondition()
def __init__(self):
super().__init__()
def run(self):
self.mutex.lock()
for i in range(10000):
for j in range(10000):
print(j)
for k in range(10000):
# time.sleep(0.1)
self.trigger.emit(i + j + k)
# time.sleep(0.1)
self.cond.wait(self.mutex)
self.complete.emit()
self.mutex.unlock()
def resume(self):
self.cond.wakeAll()
if __name__ == '__main__':
app = QApplication(sys.argv)
window = MainWindow()
screen = QDesktopWidget().screenGeometry()
height = 100
width = 300
window.setGeometry(int((screen.width() - width) / 2), int((screen.height() - height) / 2), width, height)
window.setWindowTitle("test")
window.show()
sys.exit(app.exec())
`
help me,How to improve the code so that it does not stop automatically