It’s easy to create a nice-looking chart with just a few lines of code since each chart type is packaged into a method and the built-in styles are great.The '%' operator is used to format a set of variables enclosed in a 'tuple' (a fixed size list), together with a format string, which contains normal text together with 'argument specifiers', special symbols like '%s' and '%d'. Python uses C-style string formatting to create new, formatted strings.
