A Counter turns a sequence of values into a defaultdict(int)-like object mappingkeys to counts:

The statement you provided is about Python's Counter class, which is a part of the collections module. The Counter class in Python is used to count the frequency of elements in a list, tuple, dictionary, string, which are all iterable objects.

Here's a step-by-step explanation:

1. Import the Counter class from the collections module.

from collections import Counter

2. Create a list of elements.

elements = ['apple', 'banana', 'apple', 'orange', 'banana', 'banana']

3. Pass the list to the Counter class, which returns a dictionary-like object with elements as keys and their counts as values.

counter = Counter(elements)

4. Print the counter.

print(counter)

This will output:

Counter({'banana': 3, 'apple': 2, 'orange': 1})

This shows that 'banana' appears 3 times, 'apple' 2 times, and 'orange' 1 time in the list.