I'm trying to install PyQt but i've met some difficulties (i.e packages that won't be updated and stuff like that). I'm not very proficient with Ubuntu, so some help is needed. Here's the output i get from the terminal:

sudo apt-get install python-qt4
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python-qt4 : Depends: libqt4-declarative (>= 4:4.7.0~rc1) but it is not going to be installed
              Depends: libqt4-designer (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-help (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-script (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-scripttools (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-svg (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-test (>= 4:4.7.0) but it is not going to be installed
              Depends: libqt4-xmlpatterns (>= 4:4.7.0) but it is not going to be installed
E: Broken packages