The symbol string formatting table summarizes python
| symbol | Explanation |
|---|---|
| %c | Formatting characters and their ASCII code |
| %s | Format string |
| %d | Integer format |
| %O | Formatting unsigned octal |
| %x | Unsigned hexadecimal format |
| %X | Unsigned hexadecimal format (uppercase) |
| %f | Fixed-point format, to specify the point precision |
| %e | Scientific notation fixed-point format |
| %E | Action with% e, scientific notation fixed-point format |
| %g | Using% f% e or the value determined according to the size |
| %G | Action with% g, or% E% F used according to the size of the determined value |
