Write a function named "hello_world" that takes a key-value store mapping strings to strings as a parameter and writes the values of the input to a file named "hello. txt" with one element per line. If a file named "hello.txt" already exists it must be overwritten. The function should not return any value. Do not know how to start any kind of information that will help me to do it will be useful. Pyhton is the preffered language.