Partita IVA (Italian VAT number).
The Partita IVA (Imposta sul valore aggiunto) consists of 11 digits. The first 7 digits are a company identifier, the next 3 refer to the province of residence and the last is a check digit.
The fiscal code for individuals is not accepted as valid code for intracommunity VAT related operations so it is ignored here.
>>> validate('IT 00743110157')
'00743110157'
>>> validate('00743110158') # invalid check digit
Traceback (most recent call last):
...
InvalidChecksum: ...
Convert the number to the minimal representation. This strips the number of any valid separators and removes surrounding whitespace.
Checks to see if the number provided is a valid VAT number. This checks the length, formatting and check digit.
Checks to see if the number provided is a valid VAT number. This checks the length, formatting and check digit.