from tkinter import *
root = Tk()
root.title("Leap Year Checker")
def checkLeapYear(year):
if(year % 4 == 0):
if(year % 100 == 0):
if(year % 400 == 0):
label.config(text="The year is a leap year")
else:
label.config(text="The year is not a leap year")
else:
e.insert(0, "The year is not a leap year")
e = Entry(root, borderwidth=5)
e.grid(row=0, column=0)
year = int(e.get())
checkButton = Button(root, text="Check", padx=20, pady=3, command=lambda:checkLeapYear(year))
checkButton.grid(row=0, column=1)
label = Label(root)
label.grid(row=1, column=0, columnspan=2)
label.configure(anchor=CENTER)
root.mainloop()