?i vdZddlmZddlZddlddlmZejdZd dZ d dZ d d Z d d Z y) aCAS RN (Chemical Abstracts Service Registry Number). The CAS Registry Number is a unique identifier assigned by the Chemical Abstracts Service (CAS) to a chemical substance. More information: * https://en.wikipedia.org/wiki/CAS_Registry_Number >>> validate('87-86-5') '87-86-5' >>> validate('87-86-6') Traceback (most recent call last): ... InvalidChecksum: ... >>> validate('012770-26-2') Traceback (most recent call last): ... InvalidFormat: ... ) annotationsN)*)cleanz ^[1-9][0-9]{1,6}-[0-9]{2}-[0-9]$c|t|dj}d|vrdj|dd|dd|ddf}|S)z1Convert the number to the minimal representation. -N)rstripjoinnumbers S/var/www/html/myprovider/mon_projet_qr/lib/python3.12/site-packages/stdnum/casrn.pycompactr4sK 63  % % 'F &6#2;r" vbc{CD Mc |jdd}ttdtt |DdzS)ziCalculate the check digit for the number. The passed number should not have the check digit included.rc3DK|]\}}|dzt|zyw)N)int).0ins r z#calc_check_digit..As! EAQUc!f  Es  )replacestrsum enumeratereversedr s rcalc_check_digitr!<s@^^C $F  E8F3C)D EEJ LLrct|}dt|cxkrdkstttj |s t |dt |ddk7r t|S)/Check if the number provided is a valid CAS RN. r N)rlen InvalidLength_cas_rematch InvalidFormatr!InvalidChecksumr s rvalidater,Dsk V_F F !r !o "o == o bz%fSbk22 MrcJ tt|S#t$rYywxYw)r#F)boolr,ValidationErrorr s ris_validr0Ps)HV$%% s  "")rrreturnr)rrr1r.) __doc__ __future__rrestdnum.exceptions stdnum.utilrcompiler(rr!r,r0rrr9s@(*#  "**8 9L r