stdnum.jp.cn

CN (法人番号, hōjin bangō, Japanese Corporate Number).

The Corporate Number is assigned by the Japanese National Tax Agency to identify government organs, public entities, registered corporations and other organisations. The number consists of 13 digits where the first digit is a non-zero check digit.

More information:

• https://en.wikipedia.org/wiki/Corporate_Number

• https://www.nta.go.jp/taxes/tetsuzuki/mynumberinfo/houjinbangou/

>>> validate('5-8356-7825-6246')
'5835678256246'
>>> validate('2-8356-7825-6246')
Traceback (most recent call last):
  ...
InvalidChecksum: ...
>>> format('5835678256246')
'5-8356-7825-6246'

stdnum.jp.cn.calc_check_digit(number: str) → str

Calculate the check digit. The number passed should not have the check digit included.

stdnum.jp.cn.compact(number: str) → str

Convert the number to the minimal representation. This strips the number of any valid separators and removes surrounding whitespace.

stdnum.jp.cn.format(number: str) → str

Reformat the number to the standard presentation format.

stdnum.jp.cn.is_valid(number: str) → bool

Check if the number is a valid CN.

stdnum.jp.cn.validate(number: str) → str

Check if the number is valid. This checks the length and check digit.