Destructors are called when an object gets destroyed. In Python, destructors are not needed as much as in C++ because Python has a garbage collector that handles memory management automatically.
The __del__() method is a known as a destructor method in Python. It is called when all references to the object have been deleted i.e when an object is garbage collected.
Syntax of destructor declaration :
def __del__(self): # body of destructor
Note : A reference to objects is also deleted when the object goes out of reference or when the program ends.
Example 1 : Here is the simple example of destructor. By using del keyword we deleted the all references of object ‘obj’, therefore destructor invoked automatically.