The variable most_recent_novel is associated with a dictionary that maps the names of novelists to their most recently published novels. Write a statement that replaces the value "Harry Potter and the Half-Blood Prince" with the value "Harry Potter and the Deathly Hallows" for the key "J. K. Rawling".

"most_recent_novel['J.K. Rawling']='Harry Potter and the Deathly Hallows'" is a statement which do the task which is told by the question.

Explanation:

The above question have one dictonary which have some value for the key "J.K. Rawling". The value can be changed for the same variable and for this key by the help of above statement.The dictonary is used in the python, if a user wants to use the dictonary then he can do this by the help of "varible_name={key:value}" and can be accessed or canged by the help of "variable_name[key]".