Hi HN! I created reaktiv, a Python library that brings reactive Signals to the backend world.<p>The frontend ecosystem has already embraced Signal-based reactivity (Angular, SolidJS, React) with tremendous success. It's time for Python developers to enjoy these same benefits. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.<p>reaktiv automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state - benefits that are just as valuable on the backend as they are in UI frameworks.<p>I'm seeing initial interest from data scientists and believe the Home Assistant/IoT communities could benefit greatly from this approach. Python deserves the same modern reactivity patterns that have revolutionized frontend development.<p>Would love your thoughts on bringing Signals to the Python ecosystem!