The stable version of CrysPy and "CrysPy Editor"can be downloaded through pip (python 3 has to be installed):
python -m pip install cryspy_editor
to upgrade the library type:
python -m pip install --upgrade cryspy cryspy_editor
To run "CrysPy editor" type in console:
python -m cryspy_editor
Try CrysPy in a Web Browser before installing it on your PC.