python threading lock example within function

Example: threading lock in python

import threading
lock = threading.Lock()
def check_this():
    with lock:   
      	"""
        acquires lock at the beginning 
        and releases at the end of this block
        """
        
        a, b = 1, 0
        print("locked")
        try:
            print(a // b)
        except Exception as _:
            print(_)
        print("lock is released")
   
[threading.Thread(target=also_this).start() for _ in range(2)]