wxPython 3.0 is in source package wxpython3.0 - wxwidgets3.0 is just the C++ library (for wx 2.8, both were in wxwidgets2.8).
wxPython 3.0 is in source package wxpython3.0 - wxwidgets3.0 is just the C++ library (for wx 2.8, both were in wxwidgets2.8).