Merkkijono

userInput = input()
 
def poista(stringOfUser):
    for x in range(0, len(stringOfUser)-1): #Syötteellä bc looppi ei pyöri kertaakaan!
        if x == len(stringOfUser)-1:
            return stringOfUser
            print("Valmis")
            break
        if stringOfUser[x] == stringOfUser[x+1]:
            start = x
            end = start + 1
            while end < len(stringOfUser)-1:
                end += 1
                if stringOfUser[end] == stringOfUser[start]:
                    continue
                else:
                    end -= 1
                    break
            firstPart = stringOfUser[0:start]
            secondPart = stringOfUser[end+1:]
            final = firstPart + secondPart
            return final
    return stringOfUser    
 
 
while userInput != poista(userInput):
    userInput = poista(userInput)
 
print(userInput)
    

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED