from tkinter import *
from tkinter import messagebox
tasks_list = []
counter = 1
def inputError() :
if enterTaskField.get() == "" :
messagebox.showerror("Input Error")
return 0
return 1
def clear_NumberField() :
taskNumberField.delete(0.0, END)
def clear_taskField() :
enterTaskField.delete(0, END)
# Function for inserting the content
# from the task entry field to the text area
def insertTask():
global counter
value = inputError()
if value == 0 :
return
content = enterTaskField.get() + "\n"
# store task in the list
tasks_list.append(content)
TextArea.insert('end -1 chars', "[ " + str(counter) + " ] " + content)
counter += 1
clear_taskField()
# function for deleting the specified task
def delete() :
global counter
if len(tasks_list) == 0 :
messagebox.showerror("No task")
return
# get the task number, which is required to delete
number = taskNumberField.get(1.0, END)
if number == "\n" :
messagebox.showerror("input error")
return
else :
task_no = int(number)
# function calling for deleting the
# content of task number field
clear_NumberField()
# deleted specified task from the list
tasks_list.pop(task_no - 1)
# decremented
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 = "light blue")
gui.title("ToDo App")
gui.geometry("250x300")
enterTask = Label(gui, text = "Enter Your Task", bg = "light blue")
enterTaskField = Entry(gui)
Submit = Button(gui, text = "Submit", fg = "Black", bg = "light yellow", command = insertTask)
TextArea = Text(gui, height = 5, width = 25, font = "lucida 13")
taskNumber = Label(gui, text = "Delete Task Number", bg = "Red")
taskNumberField = Text(gui, height = 1, width = 2, font = "lucida 13")
delete = Button(gui, text = "Delete", fg = "Black", bg = "Red", command = delete)
Exit = Button(gui, text = "Exit", fg = "Black", bg = "Red", command = exit)
enterTask.grid(row = 0, column = 2)
enterTaskField.grid(row = 1, column = 2, ipadx = 50)
Submit.grid(row = 2, column = 2)
TextArea.grid(row = 3, column = 2, padx = 10, sticky = W)
taskNumber.grid(row = 4, column = 2, pady = 5)
taskNumberField.grid(row = 5, column = 2)
delete.grid(row = 6, column = 2, pady = 5)
Exit.grid(row = 7, column = 2)
gui.mainloop()
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