What are weak references in Python?

What are weak references in Python?

Weak references allow the Python garbage collector to reclaim an object even if it is still referenced. This is useful for caching.

How do I create a weak reference?

You can create a weak reference using the weakref module. For example, import weakref and then weakref.ref(obj).

What are the benefits of using weak references?

Weak references help prevent memory leaks by allowing objects to be garbage collected when they are no longer needed.

Can you give an example of when to use weak references?

Sure! Weak references are often used in caching scenarios where you want to cache objects without preventing their garbage collection.