Weak References

Weak references in Python can be a bit of a mystery at first, especially if you're primarily accustomed to strong references and the standard memory management techniques. They’re a powerful tool when you want to manage memory more efficiently, specifically in situations where you don’t want to prevent an object from being garbage collected, even while still needing a way to reference it.

If you've ever run into issues with memory leaks or wanted to implement caches without retaining too much memory, weak references might be the key you need.