学习视频：https://www.bilibili.com/video/BV1jW411Y7dL?from=search&seid=10840949410210352780 https://www.bilibili.com/video/BV1W7411F7AE?from=search&seid=10840949410210352780 https://github.com/MorvanZhou/tutorials/tree/master/tkinterTUT
1.demo1
2.demo
