How do I create multiple checkboxes from txt file in python tkinter

I'd like to make checkbuttons from the lines in my txt file via path, and then want to get the value of the checkbuttons. In the 2021-03-27.txt

1. Python
2. C++

and then, if 1.Python is checked, I need to append 1. Python complete in 2021-03-27.txt

But I have no idea how I match the lines and variables of checkbuttons. How do I solve?

path = "/Study/2021-03-27.txt"
f_open = open(path, "r")
lines = f_open.readlines()
hw_lists = []
chkvar = []

for line in lines:
    hw_lists.append(line) 
f_open.close()

chkvar_count = 0

for hw_list in hw_lists:
    Checkbutton(root, text=hw_list, variable=chkvar[chkvar_count]).pack()
    chkvar_count += 1

def resut_output():
    for i in range(len(hw_lists)-1):
        if chkvar == 1:
            f_open = open(path, "a")
            f_open.write(hw_lists[i]+"complete")
            f_open.close()

Button(root, text="OK", command=resut_output).pack()

root.mainloop()

Here is your solution

import tkinter as tk
from tkinter import *


path = "2021-03-27.txt"
f_open = open(path, "r")
lines = f_open.readlines()
hw_lists = []
chkvar = []

root = tk.Tk()

for line in lines:
    hw_lists.append(line)
    chkvar.append(tk.IntVar())
f_open.close()


chkvar_count = 0



for hw_list in hw_lists:
    print(chkvar_count)
    Checkbutton(root, text=hw_list, variable=chkvar[chkvar_count]).pack()
    chkvar_count += 1

def resut_output():
    for i in range(len(hw_lists)):
        if chkvar[i].get() == 1:
            f_open = open(path, "a")
            f_open.write('\n' + hw_lists[i].strip('\n') + " complete")
            f_open.close()

Button(root, text="OK", command=resut_output).pack()

root.mainloop()

You need to declare tk.IntVar() in chkvar instead of simple variable as tkinter updates IntVar on checkbox selection. Then read the chkvar and compare it and keep on writing information in the text as desired. Feel free to ask me in case of any question.