Python provides the del keyword to delete variables.

Python also provides the special value None, which represents "no value".

Although both are related to object management, they work differently.

del is a keyword in Python.

After using a variable, it is recommended to delete it if it is no longer required.

After deleting the variable, the corresponding object becomes eligible for Garbage Collection (if no other references exist).

After deleting a variable, it cannot be accessed.

If we try to access it, Python raises a NameError.

We can delete variables that point to immutable objects.

However, we cannot delete individual elements of an immutable object.

A string is an immutable object.

Immutable objects cannot be modified after creation.

Therefore, deleting an individual character from a string is not allowed.

Both del and None are used while working with variables, but their behavior is different.

• The variable is removed.
• The variable cannot be accessed afterwards.
• It is called an Unbind Operation.

• The variable is not removed.
• The previous object becomes eligible for Garbage Collection (if no other references exist).
• The variable still exists.
• It is called a Rebind Operation.

After assigning None, the variable still exists.

Its value becomes None.

Therefore, it can still be accessed.

del	None
Removes the variable.	Does not remove the variable.
Variable cannot be accessed.	Variable can still be accessed.
Unbind operation.	Rebind operation.
Raises NameError when accessed.	Prints None.
Object becomes eligible for Garbage Collection.	Previous object becomes eligible for Garbage Collection.

The del keyword and None are commonly used in:

• Memory management
• Large applications
• Object cleanup
• Resetting variable values
• Garbage collection optimization

• del is a Python keyword.
• del removes the variable completely.
• After using del, the variable cannot be accessed.
• Deleting an element from an immutable object (such as a string) is not allowed.
• None represents the absence of a value.
• Assigning None does not remove the variable.
• After assigning None, the variable can still be accessed.
• del performs an unbind operation, whereas assigning None performs a rebind operation.

Topic	Description
del	Deletes a variable.
Access after del	Raises NameError.
Deleting an element from an immutable object	Raises TypeError.
None	Represents no value.
Assigning None	Variable remains available.
Garbage Collection	Previous object becomes eligible if no references exist.