python-ply from openSUSE:Factory:Staging:Gcc7 project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Factory:Staging:Gcc7/standard/openSUSE:Factory:Staging:Gcc7.repo zypper refresh zypper install python-ply