How to create variable names while executing a code?

Question

How to create variable names while executing a code?

Navigation

#1 by (0 votes)

1

I need a little help.

While executing a code I get a list with x entries (the size of the list varies according to the input). Each entry in that list is a row array with a certain number of elements, not necessarily the same as each other.

To make it easier to access the rest of the code, I'd like to name each entry in that list as a variable in the following scheme:

lista[0] = cD_x

lista[1] = cA_x

lista[2] = cA_(x-1)

lista[3] = cA_(x-2)

...

lista[x] = cA_1

As x varies with each run, I have no idea how to do this. Can someone give me a hand, please?

python

asked by anonymous 18.08.2017 / 02:46

1 answer

Generate random numbers in R with Skew-Normal Bivariate distribution Why (0.0015 * 3) == 0.0045 does not return true? [duplicate]

score 0 · Answer 1

You do not necessarily need to identify the arrays, and probably should not, since they are dynamic. See the example:

tudo = [];

# Adicionando listas sem identificador em "tudo"
tudo.append([1, 2, 3, 4, 5, 6])
tudo.append(['banana', 'laranja', 'manga'])
tudo.append([0.456, 2.56, 0.0000004, 0.223, 33.33333])
tudo.append([True, True, False, True, False, False])

# A menos que você queira explicitamente identificar algo
# Aqui um lista tem o nome "especial"
especial = [4, 'Moscou', 32, 'Severino Raimundo', 0.5]
tudo.append(especial)

# E agora eis uma das formas de percorrer tudo o que existe
for lista in tudo:
    print()
    for elemento in lista:
        print(str(elemento))

# Podemos nos referir as listas por índice também
# Nesse caso você tem um "i" e um "j" nos quais "se agarrar"
for i in range(len(tudo)):
    print()
    print('LISTA ' + str(i) + ':')
    for j in range(len(tudo[i])):
        print('index[' + str(j) + '] = ' + str(tudo[i][j]))

Rewriting the second loop according to the suggestion of Anderson Carlos Woss:

# Podemos nos referir as listas por índice também
# Nesse caso você tem um "i" e um "j" nos quais "se agarrar"
for i, lista in enumerate(tudo):
    print()
    print('LISTA ' + str(i) + ':')
    for j, elemento in enumerate(lista):
        print('index[' + str(j) + '] = ' + str(elemento))