Advertisements I have used during a problem this piece of code to retrieve the count of each element in a list : nums = [1,1,3,2,3,3,4,1,1,4,2,3,3,2,1,3,4,1,2] print([nums.count(num) for num in set(nums)]) This code works well but doesn’t look like to be as efficient as this code : from collections import Counter nums = [1,1,3,2,3,3,4,1,1,4,2,3,3,2,1,3,4,1,2] counter =… Read More Python list comprehension optimization