The __del__() method is a special method in Python that is automatically called when an object is about to be destroyed. It is used to perform any cleanup actions before the object is destructed.

The general syntax of the __del__() method is:

def __del__(self):  
    # Cleanup actions  

Some important points to note about the __del__() method are:

1. It is an optional method, and if not defined, the object will still be deleted.
2. Similar to other special methods in Python, it starts and ends with double underscores.
3. It does not have any return statement.
4. It is invoked automatically by the garbage collector, so we don't explicitly call this method.

However, it's worth noting that using __del__() is usually discouraged in Python, as its behavior can be unpredictable and it might not be called in all cases. It is generally recommended to use other methods, like context managers (__enter__() and __exit__()) or explicit close() methods for cleanup actions.