2~hBdZddlmZmZGddZGddeZy)zW This module is responsible for generating the check digit and formatting SBN numbers. )AnyOptionalc6eZdZdZ ddeedeeddfdZy)SBN N registrant publicationreturnc ||_||_yN)rr )selfrr s `/var/www/peopleoo.sandbox-dev.co.uk/venv/lib/python3.12/site-packages/faker/providers/sbn/sbn.py__init__z SBN.__init__ s %&)NN)__name__ __module__ __qualname__ MAX_LENGTHrstrrrrrr s8J%)%)'SM'c]'  'rrcJeZdZdededdffd ZdefdZd dedefdZxZS) SBN9argskwargsr NcNt||i||j|_yr )superr _check_digit check_digit)r rr __class__s rrz SBN9.__init__s& $)&),,.rc tdd}dj|j|jfDcgc]}|| c}}t dt ||Ddz}|dk(rdn t |}t |Scc}w)a)Calculate the check digit for SBN-9. SBNs use the same check digit calculation as ISBN. See https://en.wikipedia.org/wiki/International_Standard_Book_Number for calculation. Only modification is weights range from 1 to 9 instead of 1 to 10. rc3>K|]\}}t||zywr )int).0bws r z$SBN9._check_digit..#sBtq!A Bs X)rangejoinrr sumzipr)r weightspartbody remainderrs rrzSBN9._check_digits{1+ww$//4;K;K)LaPTP`abBs4/ABBRG &"_c#i. ;bs BB separatorc|j|j|j|jfDcgc]}||c}Scc}wr )r-rr r)r r4r1s rformatz SBN9.format'sS~~OO$$$$  #     s A)r") rrrrrrrr6 __classcell__)rs@rrrs</c/S/T/  c      S  rrN)__doc__typingrrrrrrrr:s% ! ' ' 3 r