During December 2025, Daisy Petals contributed to the NVIDIA/cutile-python repository, focusing on enhancing developer experience and reliability for CUDA-based tensor operations. She addressed a bug in the Cat function by refining error handling for shape incompatibility, ensuring that diagnostics for cuda.tile.cat are both readable and actionable. Using Python and CUDA, Daisy improved the clarity of error messages, which helps developers quickly identify and resolve issues with dynamic tensor shapes. Her work maintained API compatibility and passed all existing tests, demonstrating careful attention to stability. This targeted fix reduced debugging time and improved code quality for downstream machine learning workloads.