Average of 2 values followed by a list

Question

I have one question: I’m trying to solve an exercise for learning, which is the following:

inform a list. Ex: [1, 3, 5, 1, -10], and return the average between the number and the next number. In this example, you should return: [2, 4, 3, -4.5]. I have no idea how to "slice" a list, because it has no limit, could create a list with 100 values...

Answer 1

As you are using a list of indefinite size just iterate with a while making the average of the current position + the next position. The loop closes when it reaches the position of tamanho da sua lista -1.

For example:

lista = [1, 3, 5, 1, -10]

tamanho = len(lista)
pos = 0
while pos < tamanho-1:
    print((lista[pos]+lista[pos+1])/2)
    pos+=1

exit:

2.0

4.0

3.0

-4.5

Or, as you said in the comments, control can be done by deleting the first item from the list. In this case the while will close when the list has less than 2 items.

lista = [1, 3, 5, 1, -10]

pos = 0
while len(lista) >= 2:
    print((lista[pos]+lista[pos+1])/2)
    lista.pop(0)