?iKFdZddlmZddldZdZd dZd dZd dZd d Z y )a>The Verhoeff algorithm. The Verhoeff algorithm is a checksum algorithm that should catch most common (typing) errors in numbers. The algorithm uses two tables for permutations and multiplications and as a result is more complex than the Luhn algorithm. More information: * https://en.wikipedia.org/wiki/Verhoeff_algorithm * https://en.wikibooks.org/wiki/Algorithm_Implementation/Checksums/Verhoeff_Algorithm The module provides the checksum() function to calculate the Verhoeff checksum a calc_check_digit() function to generate a check digit that can be append to an existing number to result in a number with a valid checksum and validation functions. >>> validate('1234') Traceback (most recent call last): ... InvalidChecksum: ... >>> checksum('1234') 1 >>> calc_check_digit('1234') '0' >>> validate('12340') '12340' ) annotations)*) r ) rrrr rr r r rr ) rrr rrr r rr r ) rr rrrr rr r r ) r rrrrrr r r r ) r rr r r rr rrr) r r rr r rrr rr) r r r rr rrrr r) r r r r rrrrrr ) rr r r r r rrrr)r) rr r r rr rrrr ) r r rrr rr rr r) r rrr rr rr rr ) rr r rrrr r r r) r rr r r r rrrr) rr rrr rr r rr ) r rr r rrrrr r cd}tdtt|DD]\}}t|t|dz|} |S)zCalculate the Verhoeff checksum over the provided number. The checksum is returned as an int. Valid numbers should have a checksum of 0.rc32K|]}t|yw)N)int).0ns V/var/www/html/myprovider/mon_projet_qr/lib/python3.12/site-packages/stdnum/verhoeff.py zchecksum..Ss@Q#a&@sr ) enumeratereversedstr_multiplication_table_permutation_table)numbercheckirs rchecksumrOsU E@(3v;*?@@K1%e,-?A-Fq-IJK Lct|s t t|dk(}|s t |S#t$r twxYw):Check if the number provided passes the Verhoeff checksum.r)bool InvalidFormatr ExceptionInvalidChecksum)rvalids rvalidater'XsQ <o A%  M os 3AcJ tt|S#t$rYywxYw)r!F)r"r'ValidationErrorrs ris_validr+es)HV$%% s  ""cntttt|dzjdS)z^Calculate the extra digit that should be appended to the number to make it a valid number.0r)rrrindexr*s rcalc_check_digitr/ms. $Xc&kC.?%@AGGJ KKrN)rrreturnr)rrr0r)rrr0r") __doc__ __future__rstdnum.exceptionsrrrr'r+r/rrr5s7(8# $$ Lr