Why is object synchronization mechanism used in Python?

The object synchronization mechanism in Python is used to control access to shared resources in multithreaded programs. It prevents multiple threads from executing critical sections of code simultaneously, which can lead to race conditions and incorrect data.

For example, the Lock object from the threading module ensures that only one thread executes a specific section of code at a given time:

import threading

lock = threading.Lock()
shared_resource = 0

def increment():
    global shared_resource
    with lock:
        temp = shared_resource
        temp += 1
        shared_resource = temp

Without synchronization, multiple threads could modify shared_resource simultaneously, leading to errors.