Code Meaning
%s String (or any object)
%r s, but uses repr, not str
%c Character
%d Decimal (integer)
%i Integer
%u Unsigned (integer)
%o Octal integer
%x Hex integer
%X x, but prints uppercase
%e Floating-point exponent
%E e, but prints uppercase
%f Floating-point decimal
%g Floating-point e or f
%G Floating-point E or f
%% Literal %