diff options
| author | Arthur de Jong <arthur@arthurdejong.org> | 2020-01-04 22:25:25 +0100 |
|---|---|---|
| committer | Arthur de Jong <arthur@arthurdejong.org> | 2020-01-05 14:45:24 +0100 |
| commit | 9605dbed3accf05c5e698f0d5d4b38a63b57f1c7 (patch) | |
| tree | 99dcd676c84751e5de42af61ad552e9815ea519c /stdnum | |
| parent | 087c668560148de86084b247c4dffafb19f5c3fe (diff) | |
The Italian IVA is also a Codice Fiscale
Closes https://github.com/arthurdejong/python-stdnum/issues/180
Diffstat (limited to 'stdnum')
| -rw-r--r-- | stdnum/it/codicefiscale.py | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/stdnum/it/codicefiscale.py b/stdnum/it/codicefiscale.py index b1b9b1f..b38022c 100644 --- a/stdnum/it/codicefiscale.py +++ b/stdnum/it/codicefiscale.py @@ -7,7 +7,7 @@ # # Copyright (C) 2009-2013 Emanuele Rocca # Copyright (C) 2014 Augusto Destrero -# Copyright (C) 2014 Arthur de Jong +# Copyright (C) 2014-2020 Arthur de Jong # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -26,18 +26,31 @@ """Codice Fiscale (Italian tax code for individuals). -The Codice Fiscale is an alphanumeric code of 16 characters used to -identify individuals residing in Italy. The number consists of three -characters derived from the person's last name, three from the person's -first name, five that hold information on the person's gender and birth -date, four that represent the person's place of birth and one check digit. +The Codice Fiscale is an alphanumeric code of 16 characters used to identify +individuals residing in Italy or 11 digits for non-individuals in which case +it matches the Imposta sul valore aggiunto. ->>> validate('RCCMNL83S18D969H') +The 16 digit number consists of three characters derived from the person's +last name, three from the person's first name, five that hold information on +the person's gender and birth date, four that represent the person's place of +birth and one check digit. + +More information: + +* https://it.m.wikipedia.org/wiki/Codice_fiscale + +>>> validate('RCCMNL83S18D969H') # personal number 'RCCMNL83S18D969H' >>> validate('RCCMNL83S18D969') Traceback (most recent call last): ... InvalidLength: ... +>>> validate('00743110157') # company number +'00743110157' +>>> validate('00743110158') # company number with invalid check digit +Traceback (most recent call last): + ... +InvalidChecksum: ... >>> calc_check_digit('RCCMNL83S18D969') 'H' """ @@ -46,10 +59,11 @@ import datetime import re from stdnum.exceptions import * +from stdnum.it import iva from stdnum.util import clean -# regular expression for matching fiscal codes +# regular expression for matching personal fiscal codes _code_re = re.compile( r'^[A-Z]{6}' r'[0-9LMNPQRSTUV]{2}[ABCDEHLMPRST]{1}[0-9LMNPQRSTUV]{2}' @@ -80,12 +94,12 @@ del values def compact(number): """Convert the number to the minimal representation. This strips the number of any valid separators and removes surrounding whitespace.""" - return clean(number, ' ').strip().upper() + return clean(number, ' -:').strip().upper() def calc_check_digit(number): - """Compute the control code for the given number. The passed number - should be the first 15 characters of a fiscal code.""" + """Compute the control code for the given personal number. The passed + number should be the first 15 characters of a fiscal code.""" code = sum(_odd_values[x] if n % 2 == 0 else _even_values[x] for n, x in enumerate(number)) return 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'[code % 26] @@ -103,6 +117,8 @@ def get_birth_date(number, minyear=1920): datetime.date(2083, 11, 18) """ number = compact(number) + if len(number) != 16: + raise InvalidComponent() day = (_date_digits[number[9]] * 10 + _date_digits[number[10]]) % 40 month = _month_digits[number[8]] + 1 year = _date_digits[number[6]] * 10 + _date_digits[number[7]] @@ -125,6 +141,8 @@ def get_gender(number): 'F' """ number = compact(number) + if len(number) != 16: + raise InvalidComponent() return 'M' if int(number[9:11]) < 32 else 'F' @@ -132,6 +150,8 @@ def validate(number): """Check if the given fiscal code is valid. This checks the length and whether the check digit is correct.""" number = compact(number) + if len(number) == 11: + return iva.validate(number) if len(number) != 16: raise InvalidLength() if not _code_re.match(number): |