def med_of_meds(list):

    sublists = [list[i : i + 5] for i in range(0, len(list), 5)]
    print(sublists)
...

[[10, 9, 8, 7, 6], [5, 4, 3, 2, 1]]
[(7, [1, 7, 6, 5, 4, 3, 2, 8, 10, 9])] #Culprit