print$($f$\text{'}\text{'})$ is used to output formatted strings.

The field width integer is $19.$ In a format specification, an alignment character can be added before the field width integer. A fill character can be added before the alignment character.

$\{$color$\_$name:$-^19\}$ centers color$\_$name within $19$ characters, filling the remaining width with $\text{'}-\text{'}.$

$\{$color$\_$name:$->19\}$ right$-$aligns color$\_$name within $19$ characters, filling the remaining width with $\text{'}-\text{'}.$