*using python

3. Write a function double(s) that takes an arbitrary string s as input, and that uses recursion to construct and return the string formed by doubling each character in the string. Here are three examples: >>doubleC'hello) >double('python) ppyytthhoonn >double(") T 1 This function is somewhat similar to the the replace function from lecture, because it needs to recursively create a new string from an existing string. However, your function will be simpler, because it won't need to decide what to do after the recursive call returns