Python Loop: List Index Out of Range

Question

Given the following list

a = [0, 1, 2, 3]

I\'d like to create a new list b, which consists of elements for which the current a

Answer 1

Try reducing the range of the for loop to range(len(a)-1):

a = [0,1,2,3]
b = []

for i in range(len(a)-1):
    b.append(a[i]+a[i+1])

print(b)

This can also be written as a list comprehension:

b = [a[i] + a[i+1] for i in range(len(a)-1)]
print(b)