How can I generate unique permutations of a list in Python?

How can I generate unique permutations of a list in Python?

You can use the itertools.permutations function to generate permutations, but to ensure uniqueness, convert the result to a set.

Can you show me a code example?

Sure! Here's a simple example:

import itertools

my_list = [1, 2, 2]
unique_permutations = set(itertools.permutations(my_list))
print(unique_permutations)

What if my list contains more than two duplicate elements?

The same approach works! The set will automatically handle duplicates, giving you only unique permutations.

Is there a way to get the permutations in a sorted order?

Yes! You can sort the list before generating permutations, like this:

sorted_list = sorted(my_list)
unique_permutations = set(itertools.permutations(sorted_list))