I was tired of getting a DCUID and trying to figure out the model name or vice versa, so I added some argument parsing to /opt/rtcds/userapps/release/sys/common/guardian/cdslib.py

Example usage after aliasing cdslib='python /opt/rtcds/userapps/release/sys/common/guardian/cdslib.py': 

thomas.shaffer@zotws8:~$ cdslib -h
usage: cdslib.py [-h] [-p] [model]

positional arguments:
  model              Give the model name or dcuid # and it will return the
                     compliment.

optional arguments:
  -h, --help         show this help message and exit
  -p, --printmodels  Print the total list of the all models and their dcuids.
thomas.shaffer@zotws8:~$ cdslib 117
h1calcs
thomas.shaffer@zotws8:~$ cdslib h1calcs
117