I am working on a typing speed app. typing speed application GUI

Until now my app can:

1. read content of a .txt file and insert it in Base text
2. search for " " in Base Text and save each index in a list
3. with a for loop and a list of indexes it can change background color of each word from Base text

After changing background of first word from Base text, I want my app to wait until user will type first word in Type here and press space key. When user presses space, my loop must go forward, change background of second word, wait again for typing text in Type here and so on until it reaches the end of Base text. I can do this if I create a click button and associate it with a command that changes a value when user clicks this button. After that I can use .wait_variable() in for loop. This way, for loop will stop and wait until user types in Type here and presses button, but this is not a good design for my app.

Can someone give me a hint or another solution? Maybe my for loop is not the best approach. Thank you!

This is my code:

main.py

from typingspeed import TypingSpeedApp
my_app = TypingSpeedApp()
my_app.read_text_file()
my_app.find_space_intervals()
my_app.type_and_check()
my_app.main_loop()

typingspeed.py

import tkinter
from tkinter import *
import time
import keyboard


class TypingSpeedApp:
    def __init__(self):
        self.typing_speed_app = Tk()
        self.typing_speed_app.title("Typing Speed Application")
        self.typing_speed_app.minsize(1200, 700)
        self.typing_speed_app.resizable(False, False)
        # define background image
        self.background_image = PhotoImage(file="background_image.PNG")
        # create canvas
        self.canvas = Canvas(self.typing_speed_app, width=1200, height=700)
        self.canvas.pack(fill="both", expand=True)
        # set image in canvas
        self.canvas.create_image(0, 0, image=self.background_image, anchor="nw")
        # add a label
        self.canvas.create_text(590, 50, text="Welcome to typing speed application", font=("Helvetica", 30),
                                fill="white")
        # add a label
        self.canvas.create_text(130, 90, text="Base text:", font=("Helvetica", 20), fill="white", state=DISABLED)
        # Define Entry Boxes
        self.base_text = Text(self.typing_speed_app, font=("Helvetica", 24), width=60, height=2, bd=0,
                              wrap=tkinter.WORD)
        self.base_text_window = self.canvas.create_window(70, 120, anchor="nw", window=self.base_text)
        # add a label
        self.canvas.create_text(130, 220, text="Type here:", font=("Helvetica", 20), fill="white")
        # Define Entry Boxes
        self.type_text = Text(self.typing_speed_app, font=("Helvetica", 24), width=20, height=1, bd=0,
                              wrap=tkinter.WORD)
        self.type_text_window = self.canvas.create_window(70, 250, anchor="nw", window=self.type_text)
        # add a label
        self.canvas.create_text(510, 220, text="Timer:", font=("Helvetica", 20), fill="white")
        # Define Entry Boxes
        self.time_text = Text(self.typing_speed_app, font=("Helvetica", 24), width=5, height=1, bd=0,
                              background="green")
        self.time_text_window = self.canvas.create_window(470, 250, anchor="nw", window=self.time_text)
        # text get from base_text
        self.base_text_get_test = ""
        # this list contain indexes of spaces
        self.space_indexes = ["1.0"]

        self.space_is_not_press = tkinter.StringVar()

        self.text_from_type_text = ""

    # show gui
    def main_loop(self):
        self.typing_speed_app.mainloop()

    def read_text_file(self):
        with open('text_1.txt') as text_file:
            lines = str(text_file.readlines())
        self.base_text.insert(tkinter.END, lines[2:-2]   " ")
        self.base_text.configure(state=DISABLED)
        self.base_text_get_test = self.base_text.get(0.1, tkinter.END)

    def find_space_intervals(self):
        idx = '1.0'
        while 1:
            idx = self.base_text.search(" ", idx, stopindex=END)
            if not idx:
                break
            last_idx = '%s