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Sometimes you might want to rank people or things: your class, vacation destinations, food, US-presidents etc.
Simply use the sort-routine of your favorite programming language. The clue: YOU are acting as the comparison operator. It's a good idea to shuffle the list of items before starting. Otherwise your decisions might get biased by the original order of the list.
Try:
from functools import cmp_to_key
from random import shuffle
def better(x,y):
print("Who is better? {0} (1) or {1} (2)".format(x,y))
while True:
a=input()
if a=="1":
r=1
break
elif a=="2":
r=-1
break
return r
liste=["Nixon","Ford","Carter","Reagan","Bush","Clinton","W. Bush","Obama","Trump","Biden"]
shuffle(liste)
liste.sort(key=cmp_to_key(better))
print("*** Result (ascending order) ***")
for n in liste:
print(n)
Who is the first and last in your list?