The string format() and format_map() methods can do a lot of relatively sophisticated string assembly for us.
The basic feature is to interpolate data into a string based on names of keyword arguments or keys in a dictionary. Variables can also be interpolated by position—we can provide position numbers instead of names. We can use a format specification like {0:3s} to use the first positional argument to format().
We've seen three of the formatting conversions—s, d, f—there are many others. Details are in Section 6.1.3 of the Python Standard Library. Here are some of the format conversions we might use:
- b is for binary, base 2.
- c is for Unicode character. The value must be a number, which is converted to a character. Often, ...
