exercise: Find duplicates
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some_list = ['a', 'b', 'c', 'b', 'd', 'm', 'n', 'n']
visto = []
duplicates = []
for value in some_list:
if value in visto:
if value not in duplicates:
duplicates.append(value)
else:
visto.append(value)
print(duplicates)
Python
INFO