Book Availability Update

As a Python-proficient librarian, you’re building a system to check the availability of book copies more efficiently.

Write a function update_availability to update the copies_available value for a specific book_id in your dataframe and return the updated dataframe.

Note: If you can’t find the book_id, return the original dataframe without any changes.

Example:

Input:

input_df

Output:

update_availability(book_id=3, copies=8, df_books=input_df) ->