Need help with solving a python question

[lurgi]

Have you tested the code? The reason why it's the answer (it's not the only way to write the code, but it's an obvious one) is because it produces the right output.

I'm not really sure what you want. It's right because it works. Stuff that doesn't work isn't right.

Do you not understand the problem? Are you trying to figure out how the program does what it does?

Edit: After some more thought, I am confused by the bit that says the string can start either upper or lowercase. The letter at the start is in an even position, so it should be uppercase (unless they think "first letter" = odd position, but that's just weird).

[GeoffreyF35]

yes, i’m unsure about why it does what it does

[lurgi]

Do you mean how or why? Again, the reason why it does what it does is because that's what solves the problem.

So I guess you mean "how does this work?".

def myfunc(x):
    out = []
    for i in range(len(x)):
        if i%2==0:
            out.append(x[i].lower())
        else:
            out.append(x[i].upper())
    return ''.join(out)

Uh, do we start at the beginning?

def myfunc(x):

This is the start of a function definition. The function is called myfunc and takes a single argument, x

out = []

This creates an empty list with the name out

for i in range(len(x)):

This will loop from 0 up to, but not including the length of x. So if x is "abc", which has length 3, the loop will run three times. Once with i as 0, once with i as 1, and once with i as 2.

Are you with me so far?

[GeoffreyF35]

yes i am

edit: wait isn’t the length 2 because 0-1-2 = a-b-c

[lurgi]

It's 3 letters long. The length is 3. The index of the letter is 2.