license_plates = {'AB-12-23': {'make': 'Dodge', 'color': 'White'},
    'SWINGER': {'make': 'Alpha', 'color': 'Blue'}, ('ABC', 123): {'make':
    'Ford', 'color': 'Yellow'}, (123456): {'make': 'Ferrari', 'color': 'Red'}}
print('%s in list of license plates? %s' % ('SWINGER', 'SWINGER' in
    license_plates))
Best Data Structure for storing license plates and searching if a given license plate exists