Word search using prefix search with the bisect module

search_word.py

def search_word(filename, prefix):
    """ Search a file containing a wordlist and print matching words by prefix """

    wordlist = sorted(filter(None, [item.lower().strip() for item in open(filename)]))
    words = []

    idx = bisect.bisect_left(wordlist, prefix)
        
    for idx in range(idx, len(wordlist)):
        word = wordlist[idx]
        if word.startswith(prefix):
            words.append(word)
            
    return words