Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:msalle:extras/15.6/home:msalle:extras.repo
zypper refresh
zypper install python-urwid
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:msalle:extras/15.5/home:msalle:extras.repo
zypper refresh
zypper install python-urwid
Для 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:msalle:extras/15.4/home:msalle:extras.repo
zypper refresh
zypper install python-urwid