convert list of dict into custom format list : I have below list 

list_of_dict = [{'flat': ['103'], 'wing': u'C'}, {'flat': ['102', '104'], 'wing': u'B'}, {'flat': ['105'], 'wing': u'D'}]

I wish to convert into 
list_of_dict = [{'flat': [{'103'}], 'wing': u'C'}, {'flat': [{'102'}, {'104'}], 'wing': u'B'}, {'flat': [{'105'}], 'wing': u'D'}]

Flat should be list of numbers enclosed in '{ }'

