Download the package fro your architecture:
Before installing the package, add the science repo and install python-sip-bin available there. Add the python3 repo and install python3-pyserial and the other needed python3 packages. In order to solve some API compatibility issues I repackaged the python3-qt4 rpms:
If needed install these packages instead of the ones coming from the python3 repository. After the latest updates, this issue seems to be solved. After installing the package, add yourself to the dialout group.