how use variable on the string python code example

Example 1: how to make a string with many variables in python

var1 = “awesome”
var2 = “ever”
print “Codecademy has the most %s coding lessons %s!” % (var1, var2)
# displays: “Codecademy has the most awesome coding lessons ever!”

Example 2: how to add a variable to an string

var str = "ello";
var letter = "h";
str = letter + str;