What is the Python collections module and how do I use it?

What is the Python collections module and how do I use it?

The Python collections module provides specialized container datatypes like namedtuple, deque, Counter, and more. It enhances the built-in types.

Can you explain how to use a Counter?

Sure! A Counter is a subclass of dict that counts hashable objects. You can create one by passing an iterable, like a list, to it.

Can you give me an example of using Counter?

Absolutely! For example, from collections import Counter; counts = Counter(['apple', 'banana', 'apple']); print(counts) will output Counter({'apple': 2, 'banana': 1}).

What are some other useful classes in the collections module?

Other useful classes include deque for fast appends and pops from both ends, namedtuple for creating tuple subclasses, and defaultdict for providing default values.