How to handle multithreaded programming in PyQt5?

In PyQt5, handling multithreaded programming can be done using either Python’s built-in threading module or the QThread class.

Utilizing the threading module.

import threading

def worker():
    print("Worker thread")

thread = threading.Thread(target=worker)
thread.start()

Using the QThread class:

from PyQt5.QtCore import QThread

class Worker(QThread):
    def run(self):
        print("Worker thread")

worker = Worker()
worker.start()

Regardless of the method used, it is important to avoid executing time-consuming operations in the main thread to prevent blocking the GUI interface. You can communicate between the main thread and sub-threads using the signal-slot mechanism, or handle operations after a thread has finished executing using QThread’s finished signal.