Answer:
def CelsiusToFahenheit(Celsius, entry):
#Celsius = int(input("Enter a temperature in Celsius: "))
Fahrenheit = 9.0/5.0 * float(Celsius) + 32
entry. delete(0, 'end')
entry.insert(0, str(Fahrenheit))
def FahenheitToCelsius(Fahrenheit, entry):
#!Fahrenheit = int(input("Enter a temperature in Fahrenheit: "))
Celsius = (float(Fahrenheit) - 32) * 5.0/9.0
entry. delete(0, 'end')
entry.insert(0, str(Celsius))
def main():
window = Tkinter.Tk()
window.title("Grid")
lb = Tkinter.Label(window, text='Fahrenheit')
lb.grid (row=0,column=0)
lb1=Tkinter.Label(window,text='Celsius:')
lb1.grid (row=0,column=1)
en =Tkinter. Entry(window, justify='right')
en.grid(row=1,column=0)
en.insert(0, "32.0")
en1=Tkinter.Entry(window, justify='right')
en1.grid(row=1,column=1)
en1.insert(0, "0.0")
btnFtoc =Tkinter.Button(window, text='>>>>', command=lambda: FahenheitToCelsius(en.get(), en1))
btnFtoc.grid(row=2,column=0)
btnCtoF =Tkinter.Button(window, text='<<<<', command=lambda: CelsiusToFahenheit(en1.get(), en))
btnCtoF.grid(row=2,column=1)
window.mainloop()
if __name__ == '__main__':
main()
