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

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

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#1 by (2 votes)
#2 by (0 votes)

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I'm doubtful in a college exercise, I need to store 3 data which are: Vehicle number, kilometers rotated and consumption in each variable of type list, but due to being different types, with the first 2 being integers and the last float, besides having the entry on the same line, I can not store them.

I thought about trying 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 (the idcar and kms), to integer but to my misfortune this error appears:

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

Given that the entries are given in this way, with 10 different values:

1001 231 59.2

1002 496 60.4

...

Adding important information that I forgot to put: In the end I must calculate the average consumption (Km / L) for each identified car and finally in the output I should print for each car its average consumption, in addition to saying which are the 2 worst consumptions between the cars.

I would love it if you could help me, thank you in advance, I hope that I have written clearly my doubts, this is the first time I write here.

python lista python-2.7

asked by anonymous 24.05.2018 / 03:19

2 answers

0

You can move a list into 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]))

24.05.2018 / 03:32

look for given in a json python show text on another page

score 2 · Accepted Answer

If values are interrelated, do not store them in separate structures, this will only increase the complexity of your application. It will be easier for you to just have 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)))

In this way your list will look like:

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

Where the identifier is index 0 of the tuple, the mileage the index 1 and the consumption the index 2. To calculate the yield, simply divide the mileage by 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)

What would generate output similar to:

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

For less efficient vehicles, read about the native Python function min and its key parameter.

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