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  1. d = {'pizza': {'massa', 'ketchup'}, 'feijoada': {'feijão', 'linguiça'}}
  2.  
  3. entrada = {'massa', 'ketchup'}
  4.  
  5. print(*filter(lambda k: entrada == d[k], d))
Success #stdin #stdout 0.03s 9612KB
stdin
Standard input is empty
stdout
pizza