PS > pip install pyuca Downloading/unpacking pyuca Running setup.py (path:C:\Users\...) egg_info for package pyuca Installing collected packages: pyuca Running setup.py install for pyuca Successfully installed pyuca Cleaning up... PS > python .\sorting_uca.py manual_sort ['açaí', 'acaíba', 'acerola', 'cajá', 'caju'] plain_sort ['acaíba', 'acerola', 'açaí', 'caju', 'cajá'] WRONG pyuca_sort ['açaí', 'acaíba', 'acerola', 'cajá', 'caju'] CORRECT