code: def synchronized(obj):
    
  
    if hasattr(obj, 'synchronizable_condition'):
      return obj.synchronizable_condition
    elif callable(obj):
      @functools.wraps(obj)
      def wrapper(self, *args, **kwargs):
        with self.synchronizable_condition:
          return obj(self, *args, **kwargs)
      return wrapper
    else:
      raise TypeError('expected Synchronizable instance or callable to decorate')
docs: This function has two purposes:
  
    1. Decorate a function that automatically synchronizes access to the object
       passed as the first argument (usually `self`, for member methods)
    2. Synchronize access to the object, used in a `with`-statement.
  
    Note that you can use #wait(), #notify() and #notify_all() only on
    synchronized objects.
  
    # Example
    ```python
    class Box(Synchronizable):
      def __init__(self):
        self.value = None
      @synchronized
      def get(self):
        return self.value
      @synchronized
      def set(self, value):
        self.value = value
  
    box = Box()
    box.set('foobar')
    with synchronized(box):
      box.value = 'taz\'dingo'
    print(box.get())
    ```
  
    # Arguments
    obj (Synchronizable, function): The object to synchronize access to, or a
      function to decorate.
  
    # Returns
    1. The decorated function.
    2. The value of `obj.synchronizable_condition`, which should implement the
       context-manager interface (to be used in a `with`-statement).