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30/07/2019

How do you delete an object in Python?

How do you delete an object in Python?

To delete an object in Python, we use the ‘del’ keyword. A when we try to refer to a deleted object, it raises NameError.

What does __ del __ do in Python?

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.

When an object is deleted in Python?

Python documentation said that an object is considered deleted if the reference counts to the object is zero and the difference between del and __del__ is that: del reduces the reference count to an object by one. __del__ executes when the reference count to an object is zero.

How do you add an object to a list in Python?

Methods to add elements to List in Python

  1. append(): append the object to the end of the list.
  2. insert(): inserts the object before the given index.
  3. extend(): extends the list by appending elements from the iterable.
  4. List Concatenation: We can use + operator to concatenate multiple lists and create a new list.

What is __ add __ in Python?

The __add__ method is used to add two object’s attributes. The __getitem__ and __setitem__ methods are used to set and get the items of an object’s container attributes. The __repr__ method is used to print the object as a string.

How do you delete an object?

There is no delete in java, and all objects are created on the heap. The JVM has a garbage collector that relies on reference counts. Once there are no more references to an object, it becomes available for collection by the garbage collector. Highly active question.

Do I need to delete objects in Python?

1) Yes, I would recommend deleting the object. This will keep your code from getting bulky and/or slow. This is an especially good decision if you have a long run-time for your code, even though Python is pretty good about garbage collection.