Getting new editions when we bought older version (ebook version)

We have the 4th edition (in ebook format) of "Python Pocket Reference". Can we get a discount when we order the 5th edition or can we get it free because we have the 4th edition?
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  • Hello Susan,

    Thanks for your interest in the Python Pocket Reference. If you have an older edition of a book, you can receive 40-50% off the purchase price of a newer edition.

    Register your book at, and we'll send you a 40% upgrade discount for print books and a 50% upgrade discount for ebooks when we publish a new edition.

    View a complete list of your registered books in the Books section on Your Products page. More information this can be found here: Have a great day!

    Best regards,
    Paul Fichera
    Customer Service Representative
    O'Reilly Media
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