Python - Recursive function. The paramters must be (s, low, high). S is a string, low and high are indices to consider from the string

Give a recursive implement to the following function: def appearances (s, low, high) The function is given a string s, and two indices: low and high (low Shigh), which indicate the range of indices that need to be considered. The function should return a dictionary that stores a mapping of characters to the number of times they each appear in s. That is, the keys of the dictionary should be the different characters in s, and their associated values should be the number of times each of them appears in s. For example, the call appearances ("Hello world", 0, 10) could return: e' Note: A dictionary is a mutable object. Use that property to update the dictionary, returned from vour recursive call