from tkinter import *
def miles_to_km():
miles = float(miles_input.get())
km = round(miles *1.609)
kilometer_result_label.config(text=f'{km}')
window = Tk()
window.title("마일->km")
window.minsize(width=500, height=300)
window.config(padx=20,pady=20)
miles_input = Entry(width=7)
miles_input.grid(column=1,row=0)
miles_label = Label(text="Miles")
miles_label.grid(column=2, row=0)
is_Eequal_label = Label(text="is equal to")
is_Eequal_label.grid(column=0,row=1)
kilometer_result_label = Label(text="0")
kilometer_result_label.grid(column=1,row=1)
kilometer_label = Label(text="km")
kilometer_label.grid(column=2,row=1)
calculate_button = Button(text="계산기",command=miles_to_km)
calculate_button.grid(column=1,row=2)
window.mainloop()