What are the differences between a HashSet and a List in Python?
An example of an AI chatbot conversation about HashSet vs List in Python.
What are the differences between a HashSet and a List in Python?
In Python, a HashSet is implemented using a set, which is unordered and does not allow duplicates. A List, on the other hand, is ordered and can contain duplicate elements.
When should I use a HashSet instead of a List?
You should use a HashSet when you need to ensure uniqueness of elements and don't care about the order. It's also faster for membership tests.
Can you give me an example of when to use each?
Sure! Use a List for maintaining a sequence of items, like a shopping list. Use a HashSet for storing unique user IDs.
Are there any performance differences between them?
Yes, sets generally have O(1) time complexity for lookups, while lists have O(n). So, sets are more efficient for membership checks.
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