You could further reduce this with a dictionary comprehension, too:
...
options = parser.parse_args()
opts_set={'width','height','longest','shortest','margin','trim','frame'}
vars_options=vars(options)
for k in opts_set-set(vars_options.keys()):
vars_options[k]=Null
You could further reduce this with a dictionary comprehension, too:
... options = parser.parse_args() opts_set={'width','height','longest','shortest','margin','trim','frame'} vars_options=vars(options) for k in opts_set-set(vars_options.keys()): vars_options[k]=Null