$>>>$ data $=$ json.dumps$($inventory$\_$db$)>>>$ router$\_$model $=$ data$[\text{'}$model$\text{'}]$

The variable data is a string and not a Python Dictionary Object.

Data from a Python dictionary cannot be accessed by using a key.

The 'model' key doesn't exist in the data object.

Values in a Python dictionary cannot be a string.

In the first line, the method needs to be json.dump$().$

import print

from print import pprint

from pprint import pprint

from pp import pprint

from printer import pprint