Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/openSUSE_Tumbleweed/openSUSE:Tools.repo
zypper refresh
zypper install python-PyYAML
Для openSUSE Factory запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/openSUSE_Factory/openSUSE:Tools.repo
zypper refresh
zypper install python-PyYAML
Для 15.7 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/15.7/openSUSE:Tools.repo
zypper refresh
zypper install python-PyYAML
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/15.6/openSUSE:Tools.repo
zypper refresh
zypper install python-PyYAML
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/15.5/openSUSE:Tools.repo
zypper refresh
zypper install python-PyYAML