A program that shuffles the characters of each word in a text file, while preserving the position of punctuation

word_shuffle.py

import random

def shuffle_word(word):
    shufflable_characters = [character for character in word if character.isalnum()]
    random.shuffle(shufflable_characters)
    word = [shufflable_characters.pop(0) if character.isalnum() else character for character in word]
    word = "".join(word)

    # Sanity check to ensure we've used the exact same number of letters as we initially collected
    assert len(shufflable_characters) == 0
    
    return word

with open("your_file_name_here.txt", "r") as file:
    for line in file:
        shuffled_words = [shuffle_word(word) for word in line.split()]
        new_line = " ".join(shuffled_words)
        print(new_line)