What are some advanced techniques for using collections in Python?

What are some advanced techniques for using collections in Python?

In Python, advanced techniques for collections include using defaultdict, Counter, namedtuple, and deque from the collections module.

Can you explain how defaultdict works?

Sure! 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 using Counter? How is it different?

Counter is a subclass of dict specifically designed for counting hashable objects. It provides a convenient way to count occurrences of items in an iterable.

Can you give me an example of using namedtuple?

Absolutely! namedtuple allows you to create tuple subclasses with named fields, making your code more readable. For example: Point = namedtuple('Point', ['x', 'y']) creates a Point object with x and y attributes.