python3-rpm from home:bmwiedemann:branches:Base:System project
Select Your Operating System
Add repository and install manually
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:bmwiedemann:branches:Base:System/15.5/home:bmwiedemann:branches:Base:System.repo zypper refresh zypper install python3-rpm