?i>dZddlmZddld dZd dZd dZd dZy) aThe ISO 7064 Mod 11, 2 algorithm. The Mod 11, 2 algorithm is a simple module 11 checksum where the check digit can be an X to make the number valid. For a module that can do generic Mod x, 2 calculations see the :mod:`stdnum.iso7064.mod_37_2` module. >>> calc_check_digit('0794') '0' >>> validate('07940') '07940' >>> calc_check_digit('079') 'X' >>> validate('079X') '079X' >>> checksum('079X') 1 ) annotations)*cNd}|D]}d|zt|dk(rdn|zdz}|S)zCCalculate the checksum. A valid number should have a checksum of 1.rX )int)numbercheckns ^/var/www/html/myprovider/mon_projet_qr/lib/python3.12/site-packages/stdnum/iso7064/mod_11_2.pychecksumr-s; E >USqCxQ772=> LcNddt|zz dz}|dk(rdSt|S)z^Calculate the extra digit that should be appended to the number to make it a valid number.rr rr)rstr)r cs rcalc_check_digitr5s2 Q&! ! !R'Ar'3%s1v%rcj t|dk(}|s t|S#t$r twxYw)'Check whether the check digit is valid.r)r Exception InvalidFormatInvalidChecksum)r valids rvalidater<sB A%  M os2cJ tt|S#t$rYywxYw)rF)boolrValidationError)r s ris_validr Gs)HV$%% s  ""N)r rreturnr )r rr!r)r rr!r)__doc__ __future__rstdnum.exceptionsrrrr rrr&s&((#&r