it is bad to set
os.environ['PYSDL2_DLL_PATH'] = '.'
in playscii.py since pySDL2 will search the same thing. You's set
os.environ['PYSDL2_DLL_PATH'] = '.'
let me puzzled and used some time to find why I can `import sdl2` but playascii complains that `could not find any library for SDL2 (PYSDL2_DLL_PATH: .)`