Question

Here is my code
i got two different output which are [2] and [2,4,6], can someone do some explanation?

list = [1,2,3]
def getdouble(l):
    result = []
    for i in l :
        i = i * 2
        result.append(i)
    return result

print getdouble(list)

def getdouble_v2 (l):
    result = []
    for i in range(len(l)):
        l[i] = l[i] * 2
        result.append(l[i])
    return result

print getdouble_v2(list)

Answer 1

The only way to get the output you claim is if the indentation in your file is broken. Verify that you’re not mixing spaces and tabs with python -tt.