是否使用Python Tkinter更改日历中单元格的背景？

import tkinter as tk
import calendar

def change_cell_background(year, month, day):
    # 创建日历
    cal = calendar.Calendar()
    dates = cal.itermonthdates(year, month)

    # 创建窗口
    window = tk.Tk()
    window.title("Calendar")
    window.geometry("400x300")

    # 创建Canvas
    canvas = tk.Canvas(window, width=400, height=300)
    canvas.pack()

    # 绘制日历
    for date in dates:
        if date.month == month:
            # 计算单元格的位置
            row = (date.day + calendar.monthrange(year, month)[0] - 1) // 7
            col = date.weekday()

            # 计算单元格的坐标
            x1 = col * 50
            y1 = row * 50
            x2 = x1 + 50
            y2 = y1 + 50

            # 创建单元格矩形
            cell = canvas.create_rectangle(x1, y1, x2, y2)

            # 设置单元格的背景颜色
            if date.day == day:
                canvas.itemconfig(cell, fill="red")
            else:
                canvas.itemconfig(cell, fill="white")

    window.mainloop()

# 示例调用
change_cell_background(2022, 1, 1)