Question about book titles problem python

Question

Basically you get input of lines of book titles and you have to change each book title to first letter+number of letters
##### start of code
file = open("/usercode/files/books.txt", "r")

#your code goes here
books = [book.strip() for book in file] #creating books list which strips each book title of newline characters

#function to change book titles
def book_coder (books):
for book in books:
book = book[0]+str(len(book))
return book

print (book_coder(books))
file.close()

#####end of code

I only get the output for the first book but I want the function to iterate over all the list elements. I'm not sure what's missing here.

Answer 1

return will come out of function. Instead of using function. Just write without function and print book. That solves problem.

If you know about yeild function, replace yield with return. I think it works also, continues loop

Answer 2

Thanks it worked!