What does if __name__ == “__main__”: do?

Question

What is the use of if __name__ == "__main__": in python? Ex. import time, thread def myfunction(string, sleeptime, lock, *args): while True: lock.acquire() time.sleep(Wakeup) lock.release() time.sleep(Wakeup) if __name__ == "__main__": lock = thread.allocate_lock() thread.start_new_thread(myfunction, ("Thread #: 1", 2, lock)) thread.start_new_thread(myfunction, ("Thread #: 2", 2, lock)) Select the correct answer from above options

Answer 1

if __name__ == "__main__" runs the script which runs from a command line like python myscript.py. It's typically a module name that exist in all namespace, I'll suggest you to add main() at the final lines, i.e at the end of mycode.py script it will cause the script to uniquely defined main function to run. There's another benefit to use it as we can also import our code to another script and then it can run the main function if and when the code decides. Ex. import xyzcode # ... any amount of other code xyzcode.main() Hope this helps, Cheers..!!