How to make this for loop in Python work?

Question

I want to spit out a list of palindromes until a certain letter I give.

It\'s about this part:

def pyramid_palindrome(last_letter):
    for letter in         


        

Answer 1

Your this entire logic could be simplified using string slicing along with string.ascii_lower as:

import string
alphs = string.ascii_lowercase   # returns string of lower case characters
last_letter = 'f'

for i in range(len(alphs)):
    print alphs[:i]+alphs[i::-1]
    if alphs[i] == last_letter:  # break the loop when `last_letter` is found
        break

which will generate output as:

a
aba
abcba
abcdcba
abcdedcba
abcdefedcba    

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Edit: If you do not want to import string, you may get the string of lowercase characters via using:

alphs = ''.join(chr(i) for i in range(97,123))