code: def synchronized(fn):
      '''
      A decorator which acquires a lock before attempting to execute its wrapped
      function. Releases the lock in a finally clause.
  
      :param fn: The function to wrap.
      '''
      lock = threading.Lock()
  
      @functools.wraps(fn)
      def decorated(*args, **kwargs):
          lock.acquire()
          try:
              return fn(*args, **kwargs)
          finally:
              lock.release()
  
      return decoratef synchronized(fn):
      '''
      A decorator which acquires a lock before attempting to execute its wrapped
      function. Releases the lock in a finally clause.
  
      :param fn: The function to wrap.
      '''
      lock = threading.Lock()
  
      @functools.wraps(fn)
      def decorated(*args, **kwargs):
          lock.acquire()
          try:
              return fn(*args, **kwargs)
          finally:
              lock.release()
  
      return decorated
docs: A decorator which acquires a lock before attempting to execute its wrapped
      function. Releases the lock in a finally clause.
  
      :param fn: The function to wrap.