Simple ToDo GUI Application using Tkinter in Python.

 ToDo GUI Application

build to do list python

Let's create a GUI based simple ToDo application in which you can add and delete the Task.

simple Todo App in Python.

EXAMPLE  :-

from tkinter import *
from tkinter import messagebox 

tasks_list = [] 

counter = 1

def inputError() : 
   

   if enterTaskField.get() == "" : 
      

      messagebox.showerror("Input Error Please Chacke ")
      
      return 0
   
   return 1


def clear_taskNumberField() : 
   

   taskNumberField.delete(0.0, END) 


def clear_taskField() : 


   enterTaskField.delete(0, END) 
   

def insertTask(): 

   global counter 

   value = inputError() 

   if value == 0 : 
      return

   content = enterTaskField.get() + "\n"

   tasks_list.append(content) 


   TextArea.insert('end -1 chars', "[ " + str(counter) + " ] " + content) 


   counter += 1


   clear_taskField() 


def delete() : 
   
   global counter 
   

   if len(tasks_list) == 0 : 
      messagebox.showerror("No task") 
      return


   number = taskNumberField.get(1.0, END) 


   if number == "\n" : 
      messagebox.showerror("input error please chack")
      return
   
   else : 
      task_no = int(number) 


   clear_taskNumberField() 
   

   tasks_list.pop(task_no - 1) 


   counter -= 1
   

   TextArea.delete(1.0, END) 


   for i in range(len(tasks_list)) : 
      TextArea.insert('end -1 chars', "[ " + str(i + 1) + " ] " + tasks_list[i]) 
   

if __name__ == "__main__" : 


   gui = Tk() 


   gui.configure(background = "#E5F558")


   gui.title("Todo Application")


   gui.geometry("250x300") 


   enterTask = Label(gui, text = "Enter Your Task", background="#F58E2D")


   enterTaskField = Entry(gui, background="#e8e9ed")

   Submit = Button(gui, text = "Submit", fg = "Black", bg = "#7FF441", command = insertTask)


   TextArea = Text(gui, height = 5, width = 25, font = "lucida 13", background="#e8e9ed")


   taskNumber = Label(gui, text="Delete Task Number", bg = "#F58E2D")
                  
   taskNumberField = Text(gui, height = 1, width = 2, font = "lucida 13", background="#e8e9ed")


   delete = Button(gui, text = "Delete", fg = "Black", bg = "#7FF441", command = delete)


   Exit = Button(gui, text = "Exit", fg = "Black", bg = "#7FF441", command = exit)


   enterTask.grid(row = 0, column = 2) 

   enterTaskField.grid(row = 1, column = 2, ipadx = 50) 
                  
   Submit.grid(row = 3, column = 2)
      

   TextArea.grid(row = 5, column = 2, padx = 10, sticky = W)
                  
   taskNumber.grid(row = 6, column = 2, pady = 5)
                  
   taskNumberField.grid(row = 7, column = 2)


   delete.grid(row = 8, column = 2, pady = 5)
                  
   Exit.grid(row = 9, column = 2)


   gui.mainloop() 


    #*****************CREATED BY CODING BLOCKS ********************#

OUTPUT

ToDo GUI Application