# Start writing code here... def prefix_check(pre_list, words): prefix_index = 100000 root = "" root_list = [] for word in words: for prefix in pre_list: prefix_index = word.lower().find(prefix) if prefix_index == -1: pass elif prefix_index == 0: root = word[len(prefix):] root_list.append(root) else: pass return root_list sentence = "We should prepopulate the pregame and postgame parties before the postmortem." prefixes = ['pre','post', 're'] for letters in sentence: if letters.isalpha(): pass elif letters == " ": pass else: sentence = sentence.replace(letters, "") word_list = sentence.split() print(sentence) roots = prefix_check(prefixes, word_list) print("The roots of the words with prefixes in this sentence are:", roots)