How to cancel the words from a list that have same letters?

Question

Say I have a list and it include words like "aa" and "bb". How I will be able to cancel all those same letter words?

Answer 1

Firstly, typo. CleasingTest is missing an n.

Here's what you were after anyways. filter-ing out those values that have all the same letter.

from urllib.request import urlopen

def not_all_letters_same(s):
    return s != s[0]*len(s)

response = urlopen("http://www.cs.queensu.ca/home/cords2/shortList.txt").read().decode('utf-8')
words = list(filter(not_all_letters_same, response.split()))

Output

['abs', 'abraham', 'absent', 'abilities', 'aaron', 'ability', 'absorption', 'about', 'above', 'abc', 'aboriginal', 'abstracts', 'absence', 'aberdeen', 'abortion', 'absolutely', 'able', 'ab', 'abandoned', 'abstract', 'abroad', 'absolute']