Inserting into MySQL Database Using Python Program

import MySQLdb

db= MySQLdb.connect(host="localhost", user="python-test", passwd="python",
db="python-test")
try:
    title = raw_input("Please enter a book title: ")
    if title == "" :
        exit
    author = raw_input("Please enter the author's name: ")
    pubdate = int( raw_input("Enter the publication year: ") )
except:
    print "Invalid value"
    exit

print "Title: [" + title + "]"
print "Author: ["+ author + "]"
print "Publication Date: " + str(pubdate)

cursor = db.cursor()

stmt = "INSERT INTO Books (BookName, BookAuthor, PublicationDate) VALUES ('"
stmt = stmt + title
stmt = stmt + "', '"
stmt = stmt + author
stmt = stmt + "', "
stmt = stmt + str(pubdate)
stmt = stmt + ")"
cursor.execute(stmt)
print "Record added!"

cursor.close ()
db.commit ()