Please write this code in python:

(1) s = AbcBa, Abc,CaBA,DeAaD.

(1) Use the loop for i in range (len(s)): approach to write a function to count the number of times each character appears in string s. The function called count_char(). Update a dict whose keys are characters and values are the number of occurrences. (2)Write a function called count_ngrams () that counts the number of times each n-gram occurs in a string, with n specified by the user and with default value n = 1. You should be able to do this by making only a small modification to count_characters(). Note:An n-gram is a sequence of n letters