can anyone explain this code in python

Question

from collections import OrderedDict
numbers=[5,3,2,1,3,4,4,6]
print(list(OrderedDict.fromkeys(numbers)))

output:
[5, 3, 2, 1, 4, 6]

Answer 1

In this code OrderedDict is used, but you will have the same effect with just using dict instead. The reason for this output is, that dicts can not have duplicated keys. List numbers do have duplicated values: 3 and 4. As all duplicates in keys will be omitted, the result will be as shown.