# stdnum.sk.dph

IČ DPH (IČ pre daň z pridanej hodnoty, Slovak VAT number).

The IČ DPH (Identifikačné číslo pre daň z pridanej hodnoty) is a 10-digit number used for VAT purposes. It has a straightforward checksum.

    >>> validate('SK 202 274 96 19')
    '2022749619'
    >>> validate('SK 202 274 96 18')  # invalid check digits
    Traceback (most recent call last):
        ...
    InvalidChecksum: ...

stdnum.sk.dph.checksum(number: str) → int

  Calculate the checksum.

stdnum.sk.dph.compact(number: str) → str

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

stdnum.sk.dph.is_valid(number: str) → bool

  Check if the number is a valid VAT number.

stdnum.sk.dph.validate(number: str) → str

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