What is a weak reference in Python?

What is a weak reference in Python?

A weak reference allows the referenced object to be garbage collected if there are no strong references to it.

Can you give me an example of how to use weak references?

Sure! You can use the weakref module. Here's a simple example:

import weakref

class MyClass:
    def __init__(self, name):
        self.name = name

obj = MyClass('example')
weak_obj = weakref.ref(obj)

print(weak_obj())  # Outputs: <__main__.MyClass object at 0x...>

# Deleting the strong reference
 del obj

print(weak_obj())  # Outputs: None

What happens when the weak reference is accessed after the object is deleted?

When the object is deleted and there are no strong references, the weak reference returns None.