Ah, interesting output:
Traceback (most recent call last):
File "/opt/psa/admin/sbin/pmmcli", line 5, in <module>
import pmmcli
File "/opt/psa/admin/share/pmmcli/pmmcli.py", line 20, in <module>
import pmmcli_session
File "/opt/psa/admin/share/pmmcli/pmmcli_session.py", line 15...