Hi Sander,

Thanks for reading my blog post and for spending the time to comment the recommendation and corrections.

For point 1, I absolutely agree with you on that. A set of one element should have a object structure that takes up less memory than a tuple with a thousand. The actual memory usage of data structure would be beyond what sys.getsizeof returns. That being said, you are still spot on with the uniqueness point!

For point 2, I take the blame on not being specific enough. set objects do allow constant-cost membership test which will be the lowest among the three but the time complexity of constructing a set may outweigh it.

For point 3, kudos to you for correcting!

Again, very much appreciated for your response!