Reverse understing


#1



Hello, I am wondering why I need the while statement in my code for it to work. Without the while statement it will only reverse like 2 or 3 letters from the list, then stop. I just don't understand what it is doing. With the while statement it appears to run correctly and passes.


lst = []
def reverse(text):
    y = ""
    for n in text:
        lst.append(n)
    while len(lst) > 0:
        for x in lst:
            y = y + lst[len(lst)-1]
            del lst[len(lst)-1]
    print lst
    print y
    return y

reverse("Hello")


#2

I am receiving this message for my code:

Your function fails on reverse("Python!"). It returns "!nohtyPcba" when it should return "!nohtyP".

temp = []

def reverse(text):
    text = str(text)
    for i in text:
        temp.insert(0, i)
    print temp
    return (''.join(temp))

I don`t understand where the letters a, b, and c come frome. As far as I can see, I haven't used the letter a even once in this code :slight_smile:

Could someone explain why the letters appear and what mistake I've done?


#3

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