Working with files, why doesn't it output what I expected?

Question

Python

file = open('books.txt', 'r')

for lis in file:
    f = 0
    print(lis[f] + str(len(lis)))

I'm trying to access a file and expect a response from it:

H12
T16
P19
G18

and it gives me:

H13
T17
P20
G18

In books.txt file:

Harry Potter
The Hunger Games
Pride and Prejudice
Gone with the Wind

Answer 1

Because there is a line break character at the end of the line.