Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
A list of the numbers to is shuffled with random.shuffle. Does the list keep all its numbers? How can you check it?
shuffle mixes the list in place, and keeps the same items.
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
random.shuffle only changes the order. It changes the list itself and gives nothing back.
Check. The length is still . And sorted(deck) == sorted(original) is True, because after sorting, the two lists hold the same numbers.
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