sonic-buildimage/device/arista/x86_64-arista_common/plugins/psuutil.py

#!/usr/bin/env python

#
# Arista PSU interface for SONiC
#

try:
    import arista.utils.sonic_psu as arista_psuutil
except ImportError as e:
    raise ImportError("%s - required module not found" % e)

PsuUtil = arista_psuutil.getPsuUtil()