輸入存款金額，7日年化收益率，輸出每日利息
完整源碼如下：
import tkinter as tk
from tkinter import messageboxdef calculate_interest():deposit = float(entry_deposit.get())interest_rate = float(entry_interest_rate.get())daily_interest_rate = interest_rate / 365 # 計算每日利率daily_interest = round(deposit * daily_interest_rate, 2) # 計算每日收益并保留兩位小數result_label.config(text=f"每天的收益為：{daily_interest}")# 創建窗口
window = tk.Tk()
window.title("存款利息計算器")
window.geometry("400x200") # 設置窗口大小# 創建標簽和輸入框
label_deposit = tk.Label(window, text="存款金額：")
label_deposit.pack()
entry_deposit = tk.Entry(window)
entry_deposit.pack()label_interest_rate = tk.Label(window, text="7日年化收益率：")
label_interest_rate.pack()
entry_interest_rate = tk.Entry(window)
entry_interest_rate.pack()# 創建按鈕
button_calculate = tk.Button(window, text="計算", command=calculate_interest)
button_calculate.pack()# 創建結果標簽
result_label = tk.Label(window, text="每天的收益為：")
result_label.pack()# 運行窗口
window.mainloop()運行結果如下：
10萬和1000萬的情況
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