Error proofing

error_proofing.py

import sqlite3
db = sqlite3.connect('bookshop.db')
result = db.cursor().execute("SELECT * FROM books").fetchall()
db.close()

n = len(result)
i = 0
while i < n:
    print(i, result[i][1]) #e.g.: 10 The Gruffalo
    i = i + 1


while True:
    try:
        choice = int(input("Enter book num >> "))
        print("Your book choice: ", result[choice])
        break
    except:
        print("Invalid book num. Try again.")