Worked on the python/cpython repository to address a reliability issue in virtual environment activation scripts when hashing is disabled. Focused on improving developer experience and CI stability, the work involved fixing a bug that could cause a non-zero exit code from the hash -r command in hashing-disabled environments. The solution included both a targeted shell script update and the addition of regression tests to ensure the activation process exits with code 0 under these conditions. Leveraged Python development, shell scripting, and unit testing skills to deliver a robust fix that reduces friction for developers working with virtual environments in Python.