What is the Counter class in Python's collections module?

Can you explain what the Counter class in Python's collections module does?

Sure! The Counter class is a subclass of dict that helps count hashable objects. It's useful for tallying items.

How do I use the Counter class to count the frequency of elements in a list?

You can create a Counter by passing a list to it. For example: from collections import Counter; counts = Counter(['a', 'b', 'a']).

Can you show me an example of counting characters in a string?

Absolutely! You can do Counter('hello world'), which will count each character's occurrences in the string.

What if I want to get the most common elements?

You can use the most_common() method. For example, counts.most_common(2) will return the two most common elements.