Create python program i. Add a function named length() to this program that takes a string (e.g., x) parameter and returns the total number of characters in x. You must NOT use the built-in len() method to solve this problem. ii. Add a function named count_all() to this program that takes two parameters, a list of characters (e.g., x) and a character (e.g., y), in this order. This function must return the total number of times y appears in x. You must NOT use the built-in count() method to solve this problem. iii. Add a function named lowercase() to this program that takes a list of uppercase letters as a parameter (e.g., x). This function must convert each uppercase letter in x to lowercase and return the list. Your function must use the ord() and chr() functions to solve this problem. You must NOT use the built-in lower() method.
Create python
i. Add a function named length() to this program that takes a string (e.g., x) parameter and returns the total number of characters in x. You must NOT use the built-in len() method to solve this problem.
ii. Add a function named count_all() to this program that takes two parameters, a list of characters (e.g., x) and a character (e.g., y), in this order. This function must return the total number of times y appears in x. You must NOT use the built-in count() method to solve this problem.
iii. Add a function named lowercase() to this program that takes a list of uppercase letters as a parameter (e.g., x). This function must convert each uppercase letter in x to lowercase and return the list. Your function must use the ord() and chr() functions to solve this problem. You must NOT use the built-in lower() method.
Hint: for any letter, the difference between its lowercase and uppercase ASCII values is 32. For example, ASCII values of 'a' and 'A' are 97 and 65, respectively; ASCII values of 'z' and 'Z' are 122 and 90, respectively.
iv. Add a main() function to this program. Call all three functions in main() with suitable values and print the results. You must add the main guard and call main().
Docstrings and comments are not necessary.
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