Provide Simple Python Code for the following function with comments and a screenshot of the code:

Challenge Write a function called popular_author that accepts a list of book dictionaries b as a parameter, and returns a string with the full name(s) of the most popular author(s) (sorted), separated by a comma if need be.. Note Each dictionary object in the list will contain three keys, 'title', 'author', and 'year' Sample >>> popular_author([['title' : 'C++ How to Program' "author' : 'Harvey Deitel', 'year' : '1994'},{'title' : 'Introduction to Algorithms' , 'author' : 'Charles E. Leiserson', 'year' : '1989'], {'title' : 'C# for Programmers' , 'author' : 'Harvey Deitel' , 'year' : '2008'}, {'title' : 'Code Complete "author' : 'Steve McConnell', 'year' : '1993'}]) 2 Harvey Deitel >>> popular_author([{'title': 'Advanced Research in VLSI' "author' : 'Charles E. Leiserson', 'year' : '1986'}, {'title' : 'C++ How to Program', 'author' : 'Harvey Deitel' , 'year' : '1994'},{'title' : 'Introduction to Algorithms! "author' : 'Charles E. Leiserson', 'year' : '1989'},{'title' : 'C# for Programmers', 'author' : 'Harvey Deitel' , 'year' : '2008'},{'title' : 'Code Complete' , "author' : 'Steve McConnell' , 'year' : '1993'}]) 2 Charles E. Leiserson, Harvey Deitel Input/Output Input consists of a list literal that Hacker Rank will read in as b, pass to your function, and then output the resulting string. Constraints b will contain at least one book record