failed extra devel every time.. even extras testing not working.. some apps start to install like n900fly,radio,tennix but fails in betwee.. need python package badly complete.. any one deb file complete with all packages included..help..!!!!!!!!

i m not able to install certain apps.. like pyqt4 full.. it fails in between.... some apps say missing packages,lib..when i try with x terminal.. its says fails to fetch.. mine 1.2 already.. need python so i can run apps...