tkinter-攝氏轉華氏溫度轉換器

#元件需有一個按鈕和輸入框，可以輸入攝氏溫度
#點選按鈕會轉成華氏後顯示於畫面上
#攝氏 = 5/9 * (華氏溫度 - 32)
#華氏 = (攝氏)(9/5) + 32

import tkinter as tk

window = tk.Tk()
window.title('Temperature Conversion')
window.geometry('800x600')
window.configure(background='white')
header_label = tk.Label(window, text='Input degree Celsius')
header_label.pack()

input_entry = tk.Entry(window)
input_entry.pack()

result_label = tk.Label(text='')
result_label.pack()
def calculate():
    C=int(input_entry.get())
    F=C*(9/5) + 32
    result_label.configure(text=(F))

button = tk.Button(window, text='Conversion',command=calculate)
button.pack()
window.mainloop()