unhashable type 'set' python
fruits = {
"Citrus": {
{"oranges", "grapefruits", "mandarins", "limes"}
},
"Stone fruit": {
{"ectarines", "apricots", "peaches", "plums"}
},
"Tropical and exotic": {
{"bananas", "mangoes"},
},
"Berries": {
{"strawberries", "raspberries", "blueberries", "kiwifruit", "passionfruit"},
},
"Melons": {
{"watermelons", "rockmelons", "honeydew melons"}
},
"Other": {
{"Apples", "Pears", "Tomatoes", "Avocados"}
}
}