PYTHON. Please write a code with comments included. Include output as well. Thank you.

1. Complete the get_num_of_characters() function, which takes a string as parameter and returns the number of characters in the user's string. We encourage you to use a for loop in this function.

2. Implement the output_without_whitespace() function. output_without_whitespace() takes a string as parameter and outputs the string's characters except for whitespace (spaces, tabs). Note: A tab is '\t'.

3. Write a function get_acronyn() that returns the acronym for a phrase, e.g. acronym for random access memory is RAM, acronym for central processing unit is CPU.

4. Create a main() function that first prompts the user to enter a sentence of their choice, output the string, and calls functions in (1) and (2) to get character counts as well as output without whitespaces; then prompts user again for a phrase and output the acronym.

(4) call the main function to run the program.