python itera il valore della chiave del dizionario
a_dict = {'color': 'blue', 'fruit': 'apple', 'pet': 'dog'}
for key, value in a_dict.items():
print(key, '->', value)
scorrere il dizionario
#iterate the dict by keys
for key in a_dict:
print(key)
#iterate the dict by items - (key,value)
for item in a_dict.items():
print(item)
#iterate the dict by values
for value in a_dict.values():
print(value)