SoftUni Final Exam Fundamentals 03 Plant Discovery

numb_of_lines = int(input())

dict_of_plants = {}
for i in range(numb_of_lines):
    commands = input()
    tokens = commands.split("<->")
    dict_of_plants[[tokens[0]][0]] = [tokens[1]]
    dict_of_plants[tokens[0]].append(float(0))
command = input()
while command != "Exhibition":
    token = command.split(": ")
    if token[0] == "Rate":
        token_rate = token[1].split(" - ")
        if token_rate[0] not in dict_of_plants:
            print("error")
        else:
            if dict_of_plants[token_rate[0]][1] == 0:
                dict_of_plants[token_rate[0]][1] = float(token_rate[1])
            else:
                k = float((int(dict_of_plants[token_rate[0]][1]) + int(token_rate[1]))/2)
                dict_of_plants[token_rate[0]][1] = k
    elif token[0] == "Update":
        token_rate = token[1].split(" - ")
        if token_rate[0] not in dict_of_plants:
            print("error")
        else:
            dict_of_plants[token_rate[0]][0] = int(token_rate[1])
    elif token[0] == "Reset":
        if token[1] not in dict_of_plants:
            print("error")
        else:
            dict_of_plants[token[1]][1] = 0
    command = input()
print("Plants for the exhibition:")
for k, v in sorted(dict_of_plants.items(), key=lambda x: (x[0][2], x[0][3]), reverse=True):                 #([x[0][2]], (-[x[0][3]])), reverse=True):
    print(f"- {k}; Rarity: {v[0]}; Rating: {v[1]:.2f}")