В файле найти слово, имеющее максимальную длину

import os.path
def longest_words(file):
    with open(r"C:\Users\Vladislav Stazharov\PycharmProjects\pr4\test.txt", "r") as text:
        words = text.read().split()
        max_length = len(max(words, key=len))
        sought_words = [word for word in words if len(word) == max_length]
        if len(sought_words) == 1:
            return sought_words[0]
        return sought_words
 
print(longest_words('article.txt'))

def longest_words(file):
    with open(file, "r") as text:
        words = text.read().split()
        max_length = len(max(words, key=len))
        sought_words = [word for word in words if len(word) == max_length]
        with open("result.txt", mode="a") as file:
            file.write(' '.join(sought_words)+"\n")
 
 
longest_words('worlds.txt')

import os
 
 
def longest_words(file):
    with open(file, "r") as text:
        words = text.read().split()
 
    max_length = len(max(words, key=len))
    sought_words = [word for word in words if len(word) == max_length]
 
    f = "result.txt"
    i = 1
    while os.path.exists(f):
        f = f"result{i}.txt"
        i += 1
    with open(f, 'w') as file:
        file.write(' '.join(sought_words) + "\n")
 
 
longest_words('article.txt')