# stdnum.dk.cvr

CVR (Momsregistreringsnummer, Danish VAT number).

The CVR (Momsregistreringsnummer, VAT) is an 8 digit number with a straightforward check mechanism.

    >>> validate('DK 13585628')
    '13585628'
    >>> validate('DK 13585627')
    Traceback (most recent call last):
        ...
    InvalidChecksum: ...

stdnum.dk.cvr.checksum(number: str) → int

  Calculate the checksum.

stdnum.dk.cvr.compact(number: str) → str

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

stdnum.dk.cvr.is_valid(number: str) → bool

  Check if the number provided is a valid VAT number. This checks the length, formatting and check digit.

stdnum.dk.cvr.validate(number: str) → str

  Check if the number provided is a valid VAT number. This checks the length, formatting and check digit.