At compile time DefaultValueAttribute won't affect the generated IL and it won't be go through to initialize the property to that value (see DefaultValue attribute is not really working with my Vehicle Property). I quickly found out, certainly, that this doens't function: Python never binds the callable to the item https://maxestatesgurgaon.business.blog/2025/06/13/ganga-realty-liv-89-modern-low-rise-living-in-the-heart-of-new-gurgaon/