import re

with open("data.txt", 'r', encoding="UTF-8") as f:
    text = f.read()

words = re.findall(r'\b\w+\b', text)
print(words)

sorted_words = sorted(words, key=len)

with open("output.txt", "+w", encoding="UTF-8") as f:
    for word in sorted_words:
        print(word)
        f.write(word + "\n")