What are advanced collection types in Python?

What are advanced collection types in Python?

Advanced collection types in Python include namedtuples, defaultdicts, Counter, and deque. Would you like to know more about any specific type?

Can you explain how defaultdict works?

Sure! A defaultdict is a subclass of the built-in dict class. It overrides one method to provide a default value for a nonexistent key, which can be specified when you create the defaultdict.

What is the difference between a list and a deque?

The main difference is that a deque (double-ended queue) allows you to append and pop items from both ends efficiently, while lists are optimized for fast fixed-time access and appending at the end.

Can you give an example of using Counter?

Absolutely! Counter is a subclass of dict that counts hashable objects. For example, you can use it to count the frequency of elements in a list: from collections import Counter; Counter(['a', 'b', 'a']) would return `Counter({'a': 2, 'b': 1}).