Pyqt5 qthread signal and pyqtslot - pyqt5

Question

How to send data to thread is running by pyqt as the code below?
I think it would be using pyqtslot, but I don't know how to use.
I'm trying to use the pyqt qthread for multithreading program.
In the code, there are two different workers instance. I try to use signal and slot for data share. but it seemed that the signal is blocked until one of the qthread is finished.
this is the code.
gui.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(641, 204)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.Button_start_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_start_1.setGeometry(QtCore.QRect(30, 20, 81, 41))
self.Button_start_1.setObjectName("Button_start_1")
self.Button_start_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_start_2.setGeometry(QtCore.QRect(30, 70, 81, 41))
self.Button_start_2.setObjectName("Button_start_2")
self.Button_stop_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_stop_1.setGeometry(QtCore.QRect(150, 20, 75, 41))
self.Button_stop_1.setObjectName("Button_stop_1")
self.Button_stop_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_stop_2.setGeometry(QtCore.QRect(150, 70, 75, 41))
self.Button_stop_2.setObjectName("Button_stop_2")
self.lcdNumber_1 = QtWidgets.QLCDNumber(self.centralwidget)
self.lcdNumber_1.setGeometry(QtCore.QRect(250, 20, 151, 41))
self.lcdNumber_1.setObjectName("lcdNumber_1")
self.lcdNumber_2 = QtWidgets.QLCDNumber(self.centralwidget)
self.lcdNumber_2.setGeometry(QtCore.QRect(250, 70, 151, 41))
self.lcdNumber_2.setObjectName("lcdNumber_2")
self.Button_pause_thread_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_pause_thread_1.setGeometry(QtCore.QRect(420, 20, 121, 41))
self.Button_pause_thread_1.setObjectName("Button_pause_thread_1")
self.Button_pause_thread_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_pause_thread_2.setGeometry(QtCore.QRect(420, 70, 121, 41))
self.Button_pause_thread_2.setObjectName("Button_pause_thread_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 641, 21))
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.Button_start_1.setText(_translate("MainWindow", "Start thread1"))
self.Button_start_2.setText(_translate("MainWindow", "Start thread2"))
self.Button_stop_1.setText(_translate("MainWindow", "Stop thread 1"))
self.Button_stop_2.setText(_translate("MainWindow", "Stop thread 1"))
self.Button_pause_thread_1.setText(_translate("MainWindow", "Pause thread 1"))
self.Button_pause_thread_2.setText(_translate("MainWindow", "Pause thread 2"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Main.py
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import pyqtSignal
from PyQt5 import QtCore
import time
from gui import Ui_MainWindow
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.uic = Ui_MainWindow()
self.uic.setupUi(self)
self.thread = {}
self.uic.Button_start_1.clicked.connect(self.start_worker_1)
self.uic.Button_start_2.clicked.connect(self.start_worker_2)
self.uic.Button_stop_1.clicked.connect(self.stop_worker_1)
self.uic.Button_stop_2.clicked.connect(self.stop_worker_2)
def start_worker_1(self):
self.thread[1] = ThreadClass(index=1)
self.thread[1].start()
self.thread[1].signal.connect(self.my_function)
self.uic.Button_start_1.setEnabled(False)
self.uic.Button_stop_1.setEnabled(True)
def start_worker_2(self):
self.thread[2] = ThreadClass(index=2)
self.thread[2].start()
self.thread[2].signal.connect(self.my_function)
self.uic.Button_start_2.setEnabled(False)
self.uic.Button_stop_2.setEnabled(True)
def stop_worker_1(self):
self.thread[1].stop()
self.uic.Button_stop_1.setEnabled(False)
self.uic.Button_start_1.setEnabled(True)
def stop_worker_2(self):
self.thread[2].stop()
self.uic.Button_stop_2.setEnabled(False)
self.uic.Button_start_2.setEnabled(True)
def my_function(self, counter):
m = counter
i = self.sender().index
if i == 1:
self.uic.lcdNumber_1.display(m)
if i == 2:
self.uic.lcdNumber_2.display(m)
class ThreadClass(QtCore.QThread):
signal = pyqtSignal(int)
def __init__(self, index=0):
super().__init__()
self.index = index
def run(self):
print('Starting thread...', self.index)
counter = 0
while True:
counter += 1
print(counter)
time.sleep(1)
self.signal.emit(counter)
def stop(self):
print('Stopping thread...', self.index)
self.terminate()
def get_value_from_button(self):
print("value of thread ")
if __name__ == "__main__":
app = QApplication(sys.argv)
main_win = MainWindow()
main_win.show()
sys.exit(app.exec())
I need to get data at get_value_from_button(self) function, when I press the button.