Contributed to the numpy/numpy repository by developing robust string-slicing utilities for Np.strings.slice, focusing on aligning its behavior with Python’s slice semantics. Used C and Python to implement edge-case handling, introducing a default stop argument and updating logic to prevent MemoryError when indices are out of order or exceed string length. Enhanced memory safety and reliability for downstream data processing pipelines by addressing scenarios such as stop=None and negative-sized allocations. Expanded unit test coverage in numpy/_core/tests/test_strings.py to validate correctness and safety, while preserving notes on dtype limitations. The work strengthened the core string manipulation API without introducing regressions.