Form that puts diacritics on the words in the text

[Melcu54]

Version 5 (Leep UpperCase, remove default text, retrieve data from dictionar.txt and dictionar-2.txt)

import tkinter as tk
import re

punctuation = re.compile("[:;,\.\"'”“\?!]")

def get_words(text, lower=False):
    words = [re.sub(punctuation, "", word) for word in text.split()]
    if lower:
        return [word.lower() for word in words]
    return words

def replace(text, old, new):
    # Replace old with new in text, keeping the case of old intact
    # Check if old starts with an uppercase letter
    if old[0].isupper():
        new = new.capitalize()
    return re.sub(r'\b' + re.escape(old) + r'\b', new, text, flags=re.IGNORECASE)

def adauga_diacritice():
    text = text_input.get("1.0", tk.END)
    words = get_words(text)
    for word in words:
        replacement = plain_2_diacritic.get(word.lower(), None)
        if replacement is not None:
            text = replace(text, word, replacement)
    text_input.delete("1.0", tk.END)
    text_input.insert("1.0", text)

def make_diacritic_word_dictionary():
    with open("dictionar.txt", "r", encoding="utf-8") as f1, open("dictionar-2.txt", "r", encoding="utf-8") as f2:
        d = get_words(f1.read(), lower=True)
        d2 = get_words(f2.read(), lower=True)
    return {w2: w for w, w2 in zip(d, d2) if w != w2}

plain_2_diacritic = make_diacritic_word_dictionary()

root = tk.Tk()
text_input = tk.Text(root, height=20, width=50)
text_input.pack(pady=20)
btn_diacritice = tk.Button(root, text="Diacritice", command=adauga_diacritice)
btn_diacritice.pack(side=tk.LEFT, padx=10)
root.mainloop()