to_do.py

import tkinter
from tkinter import *
root = Tk()
root.title("To-Do-List")
root.geometry("400x650+400+100")
root.resizable(False,False)

task_list = []
def addTask():
    task = task_entry.get()
    task_entry.delete(0,END)
    
    if task:
        with open("tasklist.txt",'a') as taskfile:
            taskfile.write(f"\n{task}")
        task_list.append(task)
        listbox.insert(END,task)
def deleteTask():
    global task_list
    task = str(listbox.get(ANCHOR))
    if task in task_list:
        task_list.remove(task)
        with open("tasklist.txt",'w') as taskfie:
            for task in task_list:
                taskfie.write(task+"\n")
                
        listbox.delete(ANCHOR)
    
def openTaskfile():
    try:
        global task_list
        with open("tasklist.txt", "r") as taskfile:
            tasks = taskfile.readlines()
        for task in tasks:
            if task != '\n':
                task_list.append(task)
                listbox.insert(END, task)
    except:
        file = open('tasklist.txt','w')
        file.close()
    




# icon 
Image_icon=PhotoImage(file="images/task.png")
root.iconphoto(False,Image_icon)
# top bar 
TopImage =PhotoImage(file="images/topbar.png")
Label(root,image=TopImage).pack()

dockImage =PhotoImage(file="images/dock.png")
Label(root,image=dockImage,bg="#32405b").place(x=30,y=25)

noteImage = PhotoImage(file="images/task.png")
Label(root,image=noteImage,bg="#32405b").place(x=340,y=25)
heading = Label(root,text="ALL TASKS",font="arial 20 bold", fg="white",bg="#32405b")
heading.place(x=130,y=20)
# main 
frame = Frame(root,width=400,height=50,bg="white")
frame.place(x=0,y=180)

task = StringVar()
task_entry= Entry(frame,width=18,font="arial 20",bd=0)
task_entry.place(x=10,y=7)
task_entry.focus()
button = Button(frame,text="ADD",font="arial 20 bold",width=6,bg="#5a95ff",fg="#fff",bd=0,command=addTask)
button.place(x=300,y=0)

# listbox 
frame1 = Frame(root,bd=3,width=700,height=280,bg="#32405b")
frame1.pack(pady=(160,0))

listbox = Listbox(frame1,font=('arial',12),width=40,height=16,bg="#32405b",fg="white",cursor="hand2",selectbackground="#5a95ff")
listbox.pack(side=LEFT, fill=BOTH, padx=2)
scrollbar = Scrollbar(frame1)
scrollbar.pack(side=RIGHT, fill=BOTH)
listbox.config(yscrollcommand=scrollbar.set)
scrollbar.config(command=listbox.yview)

openTaskfile()


#delete
Delete_icon = PhotoImage(file="images/delete.png")
Button(root,image=Delete_icon,bd=0,command=deleteTask).pack(side=BOTTOM,pady=13)


 
root.mainloop()