Build_Todo_list.PY

from tkinter import * 
root = Tk()
root.title('TechVidvan To-Do List')
root.geometry('300x400')
root.resizable(0, 0)
root.config(bg="PaleVioletRed")
# Heading Label
Label(root, text='TechVidvan Python To Do List', bg='PaleVioletRed', font=("Comic Sans MS", 15), wraplength=300).place(x=35, y=0)
# Listbox with all the tasks with a Scrollbar
tasks = Listbox(root, selectbackground='Gold', bg='Silver', font=('Helvetica', 12), height=12, width=25)
scroller = Scrollbar(root, orient=VERTICAL, command=tasks.yview)
scroller.place(x=260, y=50, height=232)
tasks.config(yscrollcommand=scroller.set)
tasks.place(x=35, y=50)
# Adding items to the Listbox
with open('tasks.txt', 'r+') as tasks_list:
    for task in tasks_list:
        tasks.insert(END, task)
    tasks_list.close()
# Creating the Entry widget where the user can enter a new item
new_item_entry = Entry(root, width=37)
new_item_entry.place(x=35, y=310)
# Creating the Buttons
add_btn = Button(root, text='Add Item', bg='Azure', width=10, font=('Helvetica', 12),
                 command=lambda: add_item(new_item_entry, tasks))
add_btn.place(x=45, y=350)
delete_btn = Button(root, text='Delete Item', bg='Azure', width=10, font=('Helvetica', 12),
                 command=lambda: delete_item(tasks))
delete_btn.place(x=150, y=350)
# Finalizing the window
root.update()
root.mainloop()<div class="open_grepper_editor" title="Edit & Save To Grepper"></div>
def add_item(entry: Entry, listbox: Listbox):
    new_task = entry.get()
    listbox.insert(END, new_task)
    with open('tasks.txt', 'a') as tasks_list_file:
        tasks_list_file.write(f'\n{new_task}')
def delete_item(listbox: Listbox):
    listbox.delete(ACTIVE)
    with open('tasks.txt', 'r+') as tasks_list_file:
        lines = tasks_list_file.readlines()
        tasks_list_file.truncate()
        for line in lines:
            if listbox.get(ACTIVE) == line[:-2]:
                lines.remove(line)
            tasks_list_file.write(line)
        tasks_list_file.close()