For openSUSE Leap 15.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Cloud:OpenStack:Victoria/openSUSE_Leap_15.2/Cloud:OpenStack:Victoria.repo
zypper refresh
zypper install python-Flask
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Cloud:OpenStack:Victoria/15.4/Cloud:OpenStack:Victoria.repo
zypper refresh
zypper install python-Flask
For 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Cloud:OpenStack:Victoria/15.3/Cloud:OpenStack:Victoria.repo
zypper refresh
zypper install python-Flask