$ python ./parse_docker_info.py

Sizes as parsed using bitmath from 'docker info':
{'memtotal_mb': MB(15470.0), 'TotalMemory': GiB(15.11), 'DataSpaceAvailable': GB(43.01), 'DataSpaceTotal': GB(44.43)}
-----------------------
diskleft percent: 96.8039612874%
-----------------------

Sizes as from to_gigabytes:
memtotal_mb 15.47 GB
TotalMemory 16.2242389606 GB
DataSpaceAvailable 43.01 GB
DataSpaceTotal 44.43 GB

Sizes as from to_bytes:
memtotal_mb 15470000000
TotalMemory 16224238960.6
DataSpaceAvailable 43010000000.0
DataSpaceTotal 44430000000.0