deleting a listing using string in deletemapping code example

Example 1: how to write to a file in python without deleting all content

file = open("FILE_NAME.txt", "w+") # opens the file in both read and write mode

Example 2: adding a variable to a string without using + in javascript

let a = 5;
let b = 10;
console.log(`The sum of a and b is ${a+b} and the multiplication is ${a*b}`); 
// The sum of a and b is 15 and the multiplication is 50