I may be too picky, and on reflection I probably shouldn't be - it was just my first thought when I saw what the project actually is for the first time.
What I meant is the "Py" prefix is typically used for Python APIs/libraries, or Python bindings to libraries in other languages. Sometimes as a prefix for dev tool names like PyInstaller or PyEnv. It's just less often used for standalone apps, only to indicate the project was developed in Python.
