A dynamically updating GUI screen from URL

[bescf]

You can, but it is usually a better practice to separate the logic from the gui, as it make the maintenance much easier as the code grows. If you want an example of how to structure your code, see this post.

Also, I checked your post. And i applied according to my program.

import sys
import time
#import random
import socket
from PyQt5 import QtWidgets, QtCore

class WorkerThread(QtCore.QObject):
    signalExample = QtCore.pyqtSignal(int)
 
    def __init__(self):
        super().__init__()
 
    @QtCore.pyqtSlot()
    def run(self):
        while True:
            HOST = '192.168.1.43'  # The server's hostname or IP address, NodeMCU IP Address
            PORT = 80              # The port used by the server, PORT NUMBER in ARDUINO CODE
            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
                s.connect((HOST, PORT))
                s.sendall(b'Hello, world')
                data = s.recv(1024)
            print('Received duration value', repr(data)) 
            self.signalExample.emit(data)
            time.sleep(1)
 
class WorkerLabel(QtWidgets.QLabel):
    def __init__(self, parent):
        super().__init__()
 
    @QtCore.pyqtSlot(int)
    def slot(self, i):
        self.setText(str(i))
 
class UserInterface(QtWidgets.QWidget):
    def __init__(self, parent):
        super().__init__()
        self.label = WorkerLabel(self)
        self.layout = QtWidgets.QVBoxLayout()
        self.layout.addWidget(self.label)
        self.setLayout(self.layout)
 
class Main(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.ui = UserInterface(self)
        self.setCentralWidget(self.ui)
 
        self.worker = WorkerThread()
        self.workerThread = QtCore.QThread()  # Move the Worker object to the Thread object
        self.workerThread.started.connect(self.worker.run)  # Init worker run() at startup
        self.worker.moveToThread(self.workerThread)
        self.worker.signalExample.connect(self.signalExample)
        self.workerThread.start()
 
        self.show()
    def signalExample(self, number):
        print(number)
  
 
if __name__== '__main__':
    app = QtWidgets.QApplication([])
    gui = Main()
    sys.exit(app.exec_())

Output:
PS C:\Users\User> & "C:/Program Files/Python37/python.exe" c:/Users/User/Desktop/PYQT/gui_1.py
Received duration value b'51'
1265033024
Received duration value b'52'
1265030864

51 & 52 cm is right. But i dont know why it shows big number.