字符串格式化+lambda+递归
https://www.bilibili.com/video/BV1o7411u7jp?p=78
b二进制,C字符UNICODE,d 10进制 o8 x16 X大写16 e 科学及算法 E科学计数法 f
https://www.bilibili.com/video/BV1b7411E7Uh?p=33
https://www.bilibili.com/video/BV1b7411E7Uh?p=34
https://www.bilibili.com/video/BV1o7411u7jp?p=78
b二进制,C字符UNICODE,d 10进制 o8 x16 X大写16 e 科学及算法 E科学计数法 f
https://www.bilibili.com/video/BV1b7411E7Uh?p=33
https://www.bilibili.com/video/BV1b7411E7Uh?p=34