Handling ISBN-13¶

class pyisbn.Isbn13(isbn)[source]¶

Initialise a new Isbn13 object.

Parameters:	isbn (str) – ISBN-13 string

calculate_checksum()[source]¶

Calculate ISBN-13 checksum.

Returns:	ISBN-13 checksum value
Return type:	`str`

convert(code=None)[source]¶

Convert ISBN-13 to ISBN-10.

Parameters:	code – Ignored, only for compatibility with `Isbn`
Returns:	ISBN-10 string
Return type:	`str`
Raises:	`ValueError` – When ISBN-13 isn’t a Bookland “978” ISBN