For SLE 15 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/SLE_15/openSUSE:Tools.repo
zypper refresh
zypper install python-pika
For SLE 12 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/SLE_12_SP4/openSUSE:Tools.repo
zypper refresh
zypper install python-pika
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Tools/SLE_12_SP3/openSUSE:Tools.repo
zypper refresh
zypper install python-pika