What are some advanced features of the Python collections library?

What are some advanced features of the Python collections library?

The Python collections library offers several advanced features like namedtuples, defaultdicts, and Counter. Would you like to explore any specific one?

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 about namedtuples? How are they different from regular tuples?

Namedtuples are a subclass of tuples that allow you to access fields by name instead of position index. This makes your code more readable and self-documenting.

Can you give me an example of using Counter?

Absolutely! Counter is a dictionary subclass for counting hashable objects. For example, you can count the frequency of elements in a list like this: Counter(['a', 'b', 'a', 'c', 'b', 'a']) which will return `Counter({'a': 3, 'b': 2, 'c': 1}).