I need to make a Python entry by storing it as a list, all in one line

Question

I am doubtful in a college exercise, I need to store 3 data which are: Vehicle number, mileage and consumption in each variable of type list, but due to be different types, with the first 2 being integer and the last float, apart from having the input on the same line, I can’t store them.

I thought I’d try to store it this way:

idcar=[] #Numero de cada veiculo
kms=[]   #Quilometros rodados
consumo=[] #Consumo de cada veiculo
for i in range(10):
    idcar[i],kms[i],consumo[i]=map(float,raw_input().split())

And then transform the float values (idcar and kms), to integer but for my misfortune appears this error:

Traceback (most recent call last):                                              
  File "consumo1.py", line 17, in <module>                                      
    idcar[i],kms[i],consume[i]=map(float,raw_input().split())                   
IndexError: list assignment index out of range

Since the entries are given this way, with 10 different values:

1001 231 59.2

1002 496 60.4

...

Adding important information that I forgot to put: At the end I should calculate the average consumption (Km/L) for each identified car and finally at the exit I should print for each car its average consumption, besides telling which are the 2 worst consumptions between cars.

I would like very much that they could help me, already grateful, I hope that I have written in a clear way my doubts, it is the first time that I write here.

Answer 1

If the values are related to each other, do not store them in different structures, this will only increase the complexity of their application. It will be easier for you to have just a list and store all the values in it, in a tuple. For example:

veiculos = []
for i in range(10):
    identificador, quilometragem, consumo = raw_input().split()
    veiculos.append((int(identificador), int(quilometragem), float(consumo)))

This way your list will look like:

veiculos = [
    (1001, 231, 59.2),
    (1002, 496, 60.4)
]

Where the identifier is the index 0 of the tuple, the mileage the index 1 and the consumption the index 2. To calculate the yield, it is enough to divide the mileage by the consumption. You can define a function for this:

def calcular_rendimento(veiculo):
    return veiculo[1] / veiculo[2]

And thus display the performance of vehicles:

for veiculo in veiculos:
    rendimento = calcular_rendimento(veiculo)
    print 'Veículo {} teve um rendimento de {:.2f} km/L'.format(veiculo[0], rendimento)

Which would generate a similar exit:

Veículo 1001 teve um rendimento de 3.90 km/L
Veículo 1002 teve um rendimento de 8.21 km/L

For vehicles with lower throughput, read about Python’s native function min and its parameter key.

But for a more readable and idiomatic solution, I suggest you read this another answer.

Answer 2

It is possible to pass a list inside a list.

dados = []

for i in range(2):
    codigo, KM, consumo = raw_input().split()
    dado = [codigo, KM, consumo]
    dados.append(dado)

for item in dados:
    print("Código: {}".format(item[0]))
    print("KM: {}".format(item[1]))
    print("Concumo: {}".format(item[2]))