In Python

Exercise 4 Write a function to get a string s1 and returns a new string made of the first 2 and the last 2 characters of the given string. If the string length is less than 2, return instead of the empty string. Sample Input 1 s1 = 'uabcs 2019' Expected Output 1 ua19 Sample Input 2 sl = 'ua' Expected Output 2 uaua Sample Input 3 s1 = 'u' Expected Output 2 "" (Empty String)