How do I iterate over sets and lists in Python?

How do I iterate over sets and lists in Python?

You can use a for loop to iterate over both sets and lists. For example, for a list: for item in my_list: and for a set: for item in my_set:.

Are there any differences in how I should iterate over them?

Yes, while the syntax is similar, remember that sets are unordered, so the order of iteration may vary.

Can I use list comprehensions with sets?

Absolutely! You can use set comprehensions similarly to list comprehensions. For example: {x for x in my_set if x > 0}.

What about nested iterations?

You can nest loops as well. For example, to iterate over a list of sets: for my_set in list_of_sets: for item in my_set:.

Any tips for performance when iterating?

Using sets can be faster for membership tests, so if you're checking for existence, prefer sets over lists.