function help (totaly beginner)

[thanikos]

create a variable which will contain the final result and put a '*' in it during the initialization. On each iteration add a letter to it followed by a '*'. and you get the final result as requested. All this inside the function.

def all_stars(s):
    # create a variable which will contain the final result and put a '*' in it.
    result = "*"

    # the for loop. A pseudo code. I wont write it for you.
    for each character in s:
        add the character to 'result'
        add a '*' right behind the character

    return the result.

You have to consider that the strings are immutable type of data so adding something to a string is meaning to assign a new value to it:

my_string = 'hello'
my_string = my_string + ', world'

Thanks! I gott it. The first function works and prints the stars.
Now i must add a new funktion that "encrypts" the input word, somehing like this: ABCD gets BCDE...moving the letters of the word by one.
I thougt i make an array with the alfabet first...but i'm stuck of course! This is the code so far:

alfabet = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
def stars(s):
    for i in range(len(s)):
        print("*",s[i],sep='',end='')
    print("*")


def krypt():
    for i in(alfabet):
        print()


text = input("write a word ")
stars(text)
krypt()
print()