What components of the collections module were used in your projects?

In Python projects, the following components of the collections module are often used for convenient work with collections:

• deque — a double-ended queue with fast append and pop operations from both ends, useful for implementing queues and stacks.

• defaultdict — a dictionary with a default value, simplifying work with grouping and counting.

• Counter — a handy tool for counting the number of elements in iterable objects.

• namedtuple — allows creating named tuples, which improves code readability.

Example of using defaultdict:

from collections import defaultdict

counts = defaultdict(int)
for word in ['apple', 'banana', 'apple']:
    counts[word] += 1
print(counts)  # defaultdict(<class 'int'>, {'apple': 2, 'banana': 1})